proc sql; create table work.test as select product_ID, max(AON) as MaximumAON from class1.smb group by 1; quit; proc sql ; select smb.PRODUCT_ID ,smb.Year ,smb.AON ,smb.CELL_CALL_CNT_M1 ,smb.CELL_CALL_CNT_M2 ,smb.CELL_CALL_CNT_M3 ,smb.CELL_CALL_CNT_M4 ,smb.CELL_CALL_CNT_M5 ,smb.CELL_CALL_CNT_M6 ,smb.CELL_CALL_SEC_M1 ,smb.CELL_CALL_SEC_M2 ,smb.CELL_CALL_SEC_M3 ,smb.CELL_CALL_SEC_M4 ,smb.CELL_CALL_SEC_M5 ,smb.CELL_CALL_SEC_M6 ,smb.CELL_CALL_avg_dur_M1 ,smb.CELL_CALL_avg_dur_M2 ,smb.CELL_CALL_avg_dur_M3 ,smb.CELL_CALL_avg_dur_M4 ,smb.CELL_CALL_avg_dur_M5 ,smb.CELL_CALL_avg_dur_M6 ,smb.CELL_USAGE_CHARGE_AMT_M1 ,smb.CELL_USAGE_CHARGE_AMT_M2 ,smb.CELL_USAGE_CHARGE_AMT_M3 ,smb.CELL_USAGE_CHARGE_AMT_M4 ,smb.CELL_USAGE_CHARGE_AMT_M5 ,smb.CELL_USAGE_CHARGE_AMT_M6 ,smb.DATA_CALL_CNT_M1 ,smb.DATA_CALL_CNT_M2 ,smb.DATA_CALL_CNT_M3 ,smb.DATA_CALL_CNT_M4 ,smb.DATA_CALL_CNT_M5 ,smb.DATA_CALL_CNT_M6 ,smb.DATA_CALL_SEC_M1 ,smb.DATA_CALL_SEC_M2 ,smb.DATA_CALL_SEC_M3 ,smb.DATA_CALL_SEC_M4 ,smb.DATA_CALL_SEC_M5 ,smb.DATA_CALL_SEC_M6 ,smb.DATA_CALL_avg_dur_M1 ,smb.DATA_CALL_avg_dur_M2 ,smb.DATA_CALL_avg_dur_M3 ,smb.DATA_CALL_avg_dur_M4 ,smb.DATA_CALL_avg_dur_M5 ,smb.DATA_CALL_avg_dur_M6 ,smb.DATA_USAGE_CHARGE_AMT_M1 ,smb.DATA_USAGE_CHARGE_AMT_M2 ,smb.DATA_USAGE_CHARGE_AMT_M3 ,smb.DATA_USAGE_CHARGE_AMT_M4 ,smb.DATA_USAGE_CHARGE_AMT_M5 ,smb.DATA_USAGE_CHARGE_AMT_M6 ,smb.INT_CALL_CNT_M1 ,smb.INT_CALL_CNT_M2 ,smb.INT_CALL_CNT_M3 ,smb.INT_CALL_CNT_M4 ,smb.INT_CALL_CNT_M5 ,smb.INT_CALL_CNT_M6 ,smb.INT_CALL_SEC_M1 ,smb.INT_CALL_SEC_M2 ,smb.INT_CALL_SEC_M3 ,smb.INT_CALL_SEC_M4 ,smb.INT_CALL_SEC_M5 ,smb.INT_CALL_SEC_M6 ,smb.INT_CALL_avg_dur_M1 ,smb.INT_CALL_avg_dur_M2 ,smb.INT_CALL_avg_dur_M3 ,smb.INT_CALL_avg_dur_M4 ,smb.INT_CALL_avg_dur_M5 ,smb.INT_CALL_avg_dur_M6 ,smb.INT_USAGE_CHARGE_AMT_M1 ,smb.INT_USAGE_CHARGE_AMT_M2 ,smb.INT_USAGE_CHARGE_AMT_M3 ,smb.INT_USAGE_CHARGE_AMT_M4 ,smb.INT_USAGE_CHARGE_AMT_M5 ,smb.INT_USAGE_CHARGE_AMT_M6 ,smb.LOCAL_CALL_CNT_M1 ,smb.LOCAL_CALL_CNT_M2 ,smb.LOCAL_CALL_CNT_M3 ,smb.LOCAL_CALL_CNT_M4 ,smb.LOCAL_CALL_CNT_M5 ,smb.LOCAL_CALL_CNT_M6 ,smb.LOCAL_CALL_SEC_M1 ,smb.LOCAL_CALL_SEC_M2 ,smb.LOCAL_CALL_SEC_M3 ,smb.LOCAL_CALL_SEC_M4 ,smb.LOCAL_CALL_SEC_M5 ,smb.LOCAL_CALL_SEC_M6 ,smb.LOCAL_CAL_avg_dur_M1 ,smb.LOCAL_CAL_avg_dur_M2 ,smb.LOCAL_CAL_avg_dur_M3 ,smb.LOCAL_CAL_avg_dur_M4 ,smb.LOCAL_CAL_avg_dur_M5 ,smb.LOCAL_CAL_avg_dur_M6 ,smb.LOCAL_USAGE_CHARGE_AMT_M1 ,smb.LOCAL_USAGE_CHARGE_AMT_M2 ,smb.LOCAL_USAGE_CHARGE_AMT_M3 ,smb.LOCAL_USAGE_CHARGE_AMT_M4 ,smb.LOCAL_USAGE_CHARGE_AMT_M5 ,smb.LOCAL_USAGE_CHARGE_AMT_M6 ,smb.NAT_CALL_CNT_M1 ,smb.NAT_CALL_CNT_M2 ,smb.NAT_CALL_CNT_M3 ,smb.NAT_CALL_CNT_M4 ,smb.NAT_CALL_CNT_M5 ,smb.NAT_CALL_CNT_M6 ,smb.NAT_CALL_SEC_M1 ,smb.NAT_CALL_SEC_M2 ,smb.NAT_CALL_SEC_M3 ,smb.NAT_CALL_SEC_M4 ,smb.NAT_CALL_SEC_M5 ,smb.NAT_CALL_SEC_M6 ,smb.NAT_CALL_avg_dur_M1 ,smb.NAT_CALL_avg_dur_M2 ,smb.NAT_CALL_avg_dur_M3 ,smb.NAT_CALL_avg_dur_M4 ,smb.NAT_CALL_avg_dur_M5 ,smb.NAT_CALL_avg_dur_M6 ,smb.NAT_USAGE_CHARGE_AMT_M1 ,smb.NAT_USAGE_CHARGE_AMT_M2 ,smb.NAT_USAGE_CHARGE_AMT_M3 ,smb.NAT_USAGE_CHARGE_AMT_M4 ,smb.NAT_USAGE_CHARGE_AMT_M5 ,smb.NAT_USAGE_CHARGE_AMT_M6 ,smb.ONE_TIME_CHARGE_AMT_M1 ,smb.ONE_TIME_CHARGE_AMT_M2 ,smb.ONE_TIME_CHARGE_AMT_M3 ,smb.ONE_TIME_CHARGE_AMT_M4 ,smb.ONE_TIME_CHARGE_AMT_M5 ,smb.ONE_TIME_CHARGE_AMT_M6 ,smb.OTHER_CALL_CNT_M1 ,smb.OTHER_CALL_CNT_M2 ,smb.OTHER_CALL_CNT_M3 ,smb.OTHER_CALL_CNT_M4 ,smb.OTHER_CALL_CNT_M5 ,smb.OTHER_CALL_CNT_M6 ,smb.OTHER_CALL_SEC_M1 ,smb.OTHER_CALL_SEC_M2 ,smb.OTHER_CALL_SEC_M3 ,smb.OTHER_CALL_SEC_M4 ,smb.OTHER_CALL_SEC_M5 ,smb.OTHER_CALL_SEC_M6 ,smb.OTHER_CAL_avg_dur_M1 ,smb.OTHER_CAL_avg_dur_M2 ,smb.OTHER_CAL_avg_dur_M3 ,smb.OTHER_CAL_avg_dur_M4 ,smb.OTHER_CAL_avg_dur_M5 ,smb.OTHER_CAL_avg_dur_M6 ,smb.OTHER_USAGE_CHARGE_AMT_M1 ,smb.OTHER_USAGE_CHARGE_AMT_M2 ,smb.OTHER_USAGE_CHARGE_AMT_M3 ,smb.OTHER_USAGE_CHARGE_AMT_M4 ,smb.OTHER_USAGE_CHARGE_AMT_M5 ,smb.OTHER_USAGE_CHARGE_AMT_M6 ,smb.OVR_CALL_AVG_DURATION_M1 ,smb.OVR_CALL_AVG_DURATION_M2 ,smb.OVR_CALL_AVG_DURATION_M3 ,smb.OVR_CALL_AVG_DURATION_M4 ,smb.OVR_CALL_AVG_DURATION_M5 ,smb.OVR_CALL_AVG_DURATION_M6 ,smb.RECURRING_CHARGE_AMT_M1 ,smb.RECURRING_CHARGE_AMT_M2 ,smb.RECURRING_CHARGE_AMT_M3 ,smb.RECURRING_CHARGE_AMT_M4 ,smb.RECURRING_CHARGE_AMT_M5 ,smb.RECURRING_CHARGE_AMT_M6 ,smb.SPEND_AMT_M1 ,smb.SPEND_AMT_M2 ,smb.SPEND_AMT_M3 ,smb.SPEND_AMT_M4 ,smb.SPEND_AMT_M5 ,smb.SPEND_AMT_M6 ,smb.TOT_CALL_CNT_M1 ,smb.TOT_CALL_CNT_M2 ,smb.TOT_CALL_CNT_M3 ,smb.TOT_CALL_CNT_M4 ,smb.TOT_CALL_CNT_M5 ,smb.TOT_CALL_CNT_M6 ,smb.TOT_CALL_SEC_M1 ,smb.TOT_CALL_SEC_M2 ,smb.TOT_CALL_SEC_M3 ,smb.TOT_CALL_SEC_M4 ,smb.TOT_CALL_SEC_M5 ,smb.TOT_CALL_SEC_M6 ,smb.TOT_CHARGE_AMT_M1 ,smb.TOT_CHARGE_AMT_M2 ,smb.TOT_CHARGE_AMT_M3 ,smb.TOT_CHARGE_AMT_M4 ,smb.TOT_CHARGE_AMT_M5 ,smb.TOT_CHARGE_AMT_M6 ,smb.USAGE_CHARGE_AMT_M1 ,smb.USAGE_CHARGE_AMT_M2 ,smb.USAGE_CHARGE_AMT_M3 ,smb.USAGE_CHARGE_AMT_M4 ,smb.USAGE_CHARGE_AMT_M5 ,smb.USAGE_CHARGE_AMT_M6 ,smb.TCL_DLM ,smb.TCL_DL2M ,smb.TCL_DL3M ,smb.TCH_DLM ,smb.TCH_DL2M ,smb.TCH_DL3M ,smb.LCL_DLM ,smb.LCL_DL2M ,smb.LCL_DL3M ,smb.NCL_DLM ,smb.NCL_DL2M ,smb.NCL_DL3M ,smb.CELL_CALL_SEC_Avg6 ,smb.CELL_CALL_avg_dur_Avg6 ,smb.CELL_USAGE_CHARGE_AMT_Avg6 ,smb.DATA_CALL_CNT_Avg6 ,smb.DATA_CALL_SEC_Avg6 ,smb.DATA_CALL_avg_dur_Avg6 ,smb.DATA_USAGE_CHARGE_AMT_Avg6 ,smb.INT_CALL_CNT_Avg6 ,smb.INT_CALL_SEC_Avg6 ,smb.INT_CALL_avg_dur_Avg6 ,smb.INT_USAGE_CHARGE_AMT_Avg6 ,smb.LOCAL_CALL_CNT_Avg6 ,smb.LOCAL_CALL_SEC_Avg6 ,smb.LOCAL_CAL_avg_dur_Avg6 ,smb.LOCAL_USAGE_CHARGE_AMT_Avg6 ,smb.NAT_CALL_CNT_Avg6 ,smb.NAT_CALL_SEC_Avg6 ,smb.NAT_CALL_avg_dur_Avg6 ,smb.NAT_USAGE_CHARGE_AMT_Avg6 ,smb.ONE_TIME_CHARGE_AMT_Avg6 ,smb.OTHER_CALL_CNT_Avg6 ,smb.OTHER_CALL_SEC_Avg6 ,smb.OTHER_CAL_avg_dur_Avg6 ,smb.OTHER_USAGE_CHARGE_AMT_Avg6 ,smb.OVR_CALL_AVG_DURATION_Avg6 ,smb.RECURRING_CHARGE_AMT_Avg6 ,smb.SPEND_AMT_Avg6 ,smb.TOT_CALL_CNT_Avg6 ,smb.TOT_CALL_SEC_Avg6 ,smb.TOT_CHARGE_AMT_Avg6 ,smb.USAGE_CHARGE_AMT_Avg6 ,smb.CELL_CALL_SEC_Avg3 ,smb.CELL_CALL_avg_dur_Avg3 ,smb.CELL_USAGE_CHARGE_AMT_Avg3 ,smb.DATA_CALL_CNT_Avg3 ,smb.DATA_CALL_SEC_Avg3 ,smb.DATA_CALL_avg_dur_Avg3 ,smb.DATA_USAGE_CHARGE_AMT_Avg3 ,smb.INT_CALL_CNT_Avg3 ,smb.INT_CALL_SEC_Avg3 ,smb.INT_CALL_avg_dur_Avg3 ,smb.INT_USAGE_CHARGE_AMT_Avg3 ,smb.LOCAL_CALL_CNT_Avg3 ,smb.LOCAL_CALL_SEC_Avg3 ,smb.LOCAL_CAL_avg_dur_Avg3 ,smb.LOCAL_USAGE_CHARGE_AMT_Avg3 ,smb.NAT_CALL_CNT_Avg3 ,smb.NAT_CALL_SEC_Avg3 ,smb.NAT_CALL_avg_dur_Avg3 ,smb.NAT_USAGE_CHARGE_AMT_Avg3 ,smb.ONE_TIME_CHARGE_AMT_Avg3 ,smb.OTHER_CALL_CNT_Avg3 ,smb.OTHER_CALL_SEC_Avg3 ,smb.OTHER_CAL_avg_dur_Avg3 ,smb.OTHER_USAGE_CHARGE_AMT_Avg3 ,smb.OVR_CALL_AVG_DURATION_Avg3 ,smb.RECURRING_CHARGE_AMT_Avg3 ,smb.SPEND_AMT_Avg3 ,smb.TOT_CALL_CNT_Avg3 ,smb.TOT_CALL_SEC_Avg3 ,smb.TOT_CHARGE_AMT_Avg3 ,smb.USAGE_CHARGE_AMT_Avg3 ,smb.CELL_CALL_CNT_DEC2_1 ,smb.CELL_CALL_CNT_DEC3_2 ,smb.CELL_CALL_CNT_DEC4_3 ,smb.CELL_CALL_CNT_DEC5_4 ,smb.CELL_CALL_CNT_DEC6_5 ,smb.CELL_CALL_SEC_DEC2_1 ,smb.CELL_CALL_SEC_DEC3_2 ,smb.CELL_CALL_SEC_DEC4_3 ,smb.CELL_CALL_SEC_DEC5_4 ,smb.CELL_CALL_SEC_DEC6_5 ,smb.CELL_CALL_avg_dur_DEC2_1 ,smb.CELL_CALL_avg_dur_DEC3_2 ,smb.CELL_CALL_avg_dur_DEC4_3 ,smb.CELL_CALL_avg_dur_DEC5_4 ,smb.CELL_CALL_avg_dur_DEC6_5 ,smb.CELL_USAGE_CHARGE_AMT_DEC2_1 ,smb.CELL_USAGE_CHARGE_AMT_DEC3_2 ,smb.CELL_USAGE_CHARGE_AMT_DEC4_3 ,smb.CELL_USAGE_CHARGE_AMT_DEC5_4 ,smb.CELL_USAGE_CHARGE_AMT_DEC6_5 ,smb.INT_CALL_CNT_DEC2_1 ,smb.INT_CALL_CNT_DEC3_2 ,smb.INT_CALL_CNT_DEC4_3 ,smb.INT_CALL_CNT_DEC5_4 ,smb.INT_CALL_CNT_DEC6_5 ,smb.INT_CALL_SEC_DEC2_1 ,smb.INT_CALL_SEC_DEC3_2 ,smb.INT_CALL_SEC_DEC4_3 ,smb.INT_CALL_SEC_DEC5_4 ,smb.INT_CALL_SEC_DEC6_5 ,smb.INT_CALL_avg_dur_DEC2_1 ,smb.INT_CALL_avg_dur_DEC3_2 ,smb.INT_CALL_avg_dur_DEC4_3 ,smb.INT_CALL_avg_dur_DEC5_4 ,smb.INT_CALL_avg_dur_DEC6_5 ,smb.INT_USAGE_CHARGE_AMT_DEC2_1 ,smb.INT_USAGE_CHARGE_AMT_DEC3_2 ,smb.INT_USAGE_CHARGE_AMT_DEC4_3 ,smb.INT_USAGE_CHARGE_AMT_DEC5_4 ,smb.INT_USAGE_CHARGE_AMT_DEC6_5 ,smb.LOCAL_CALL_CNT_DEC2_1 ,smb.LOCAL_CALL_CNT_DEC3_2 ,smb.LOCAL_CALL_CNT_DEC4_3 ,smb.LOCAL_CALL_CNT_DEC5_4 ,smb.LOCAL_CALL_CNT_DEC6_5 ,smb.LOCAL_CALL_SEC_DEC2_1 ,smb.LOCAL_CALL_SEC_DEC3_2 ,smb.LOCAL_CALL_SEC_DEC4_3 ,smb.LOCAL_CALL_SEC_DEC5_4 ,smb.LOCAL_CALL_SEC_DEC6_5 ,smb.LOCAL_CAL_avg_dur_DEC2_1 ,smb.LOCAL_CAL_avg_dur_DEC3_2 ,smb.LOCAL_CAL_avg_dur_DEC4_3 ,smb.LOCAL_CAL_avg_dur_DEC5_4 ,smb.LOCAL_CAL_avg_dur_DEC6_5 ,smb.LOCAL_USAGE_CHARGE_AMT_DEC2_1 ,smb.LOCAL_USAGE_CHARGE_AMT_DEC3_2 ,smb.LOCAL_USAGE_CHARGE_AMT_DEC4_3 ,smb.LOCAL_USAGE_CHARGE_AMT_DEC5_4 ,smb.LOCAL_USAGE_CHARGE_AMT_DEC6_5 ,smb.NAT_CALL_CNT_DEC2_1 ,smb.NAT_CALL_CNT_DEC3_2 ,smb.NAT_CALL_CNT_DEC4_3 ,smb.NAT_CALL_CNT_DEC5_4 ,smb.NAT_CALL_CNT_DEC6_5 ,smb.NAT_CALL_SEC_DEC2_1 ,smb.NAT_CALL_SEC_DEC3_2 ,smb.NAT_CALL_SEC_DEC4_3 ,smb.NAT_CALL_SEC_DEC5_4 ,smb.NAT_CALL_SEC_DEC6_5 ,smb.NAT_CALL_avg_dur_DEC2_1 ,smb.NAT_CALL_avg_dur_DEC3_2 ,smb.NAT_CALL_avg_dur_DEC4_3 ,smb.NAT_CALL_avg_dur_DEC5_4 ,smb.NAT_CALL_avg_dur_DEC6_5 ,smb.NAT_USAGE_CHARGE_AMT_DEC2_1 ,smb.NAT_USAGE_CHARGE_AMT_DEC3_2 ,smb.NAT_USAGE_CHARGE_AMT_DEC4_3 ,smb.NAT_USAGE_CHARGE_AMT_DEC5_4 ,smb.NAT_USAGE_CHARGE_AMT_DEC6_5 ,smb.SPEND_AMT_DEC2_1 ,smb.SPEND_AMT_DEC3_2 ,smb.SPEND_AMT_DEC4_3 ,smb.SPEND_AMT_DEC5_4 ,smb.SPEND_AMT_DEC6_5 ,smb.TOT_CALL_CNT_DEC2_1 ,smb.TOT_CALL_CNT_DEC3_2 ,smb.TOT_CALL_CNT_DEC4_3 ,smb.TOT_CALL_CNT_DEC5_4 ,smb.TOT_CALL_CNT_DEC6_5 ,smb.TOT_CALL_SEC_DEC2_1 ,smb.TOT_CALL_SEC_DEC3_2 ,smb.TOT_CALL_SEC_DEC4_3 ,smb.TOT_CALL_SEC_DEC5_4 ,smb.TOT_CALL_SEC_DEC6_5 ,smb.TOT_CHARGE_AMT_DEC2_1 ,smb.TOT_CHARGE_AMT_DEC3_2 ,smb.TOT_CHARGE_AMT_DEC4_3 ,smb.TOT_CHARGE_AMT_DEC5_4 ,smb.TOT_CHARGE_AMT_DEC6_5 ,smb.USAGE_CHARGE_AMT_DEC2_1 ,smb.USAGE_CHARGE_AMT_DEC3_2 ,smb.USAGE_CHARGE_AMT_DEC4_3 ,smb.USAGE_CHARGE_AMT_DEC5_4 ,smb.USAGE_CHARGE_AMT_DEC6_5 ,smb.Avg_DEC_6M_CELL_CALL_CNT ,smb.Avg_DEC_6M_CELL_CALL_SEC ,smb.Avg_DEC_6M_CELL_CALL_avg_dur ,smb.Avg_DEC_6M_CELL_USAGE_CHARGE_AMT ,smb.Avg_DEC_6M_INT_CALL_CNT ,smb.Avg_DEC_6M_INT_CALL_SEC ,smb.Avg_DEC_6M_INT_CALL_avg_dur ,smb.Avg_DEC_6M_INT_USAGE_CHARGE_AMT ,smb.Avg_DEC_6M_LOCAL_CALL_CNT ,smb.Avg_DEC_6M_LOCAL_CALL_SEC ,smb.Avg_DEC_6M_LOCAL_CAL_avg_dur ,smb.Avg_DEC_6M_LOC_USAGE_CHRG_AMT ,smb.Avg_DEC_6M_NAT_CALL_CNT ,smb.Avg_DEC_6M_NAT_CALL_SEC ,smb.Avg_DEC_6M_NAT_CALL_avg_dur ,smb.Avg_DEC_6M_NAT_USAGE_CHARGE_AMT ,smb.Avg_DEC_6M_SPEND_AMT ,smb.Avg_DEC_6M_TOT_CALL_CNT ,smb.Avg_DEC_6M_TOT_CALL_SEC ,smb.Avg_DEC_6M_TOT_CHARGE_AMT ,smb.Avg_DEC_6M_USAGE_CHARGE_AMT ,smb.Avg_DEC_3M_CELL_CALL_CNT ,smb.Avg_DEC_3M_CELL_CALL_SEC ,smb.Avg_DEC_3M_CELL_CALL_avg_dur ,smb.Avg_DEC_3M_CELL_USAGE_CHARGE_AMT ,smb.Avg_DEC_3M_INT_CALL_CNT ,smb.Avg_DEC_3M_INT_CALL_SEC ,smb.Avg_DEC_3M_INT_CALL_avg_dur ,smb.Avg_DEC_3M_INT_USAGE_CHARGE_AMT ,smb.Avg_DEC_3M_LOCAL_CALL_CNT ,smb.Avg_DEC_3M_LOCAL_CALL_SEC ,smb.Avg_DEC_3M_LOCAL_CAL_avg_dur ,smb.Avg_DEC_3M_LOC_USAGE_CHRG_AMT ,smb.Avg_DEC_3M_NAT_CALL_CNT ,smb.Avg_DEC_3M_NAT_CALL_SEC ,smb.Avg_DEC_3M_NAT_CALL_avg_dur ,smb.Avg_DEC_3M_NAT_USAGE_CHARGE_AMT ,smb.Avg_DEC_3M_SPEND_AMT ,smb.Avg_DEC_3M_TOT_CALL_CNT ,smb.Avg_DEC_3M_TOT_CALL_SEC ,smb.Avg_DEC_3M_TOT_CHARGE_AMT ,smb.Avg_DEC_3M_USAGE_CHARGE_AMT from class1.smb left join test on smb.product_id=test.product_id; quit; error is given as follows:- 488 ,smb.Avg_DEC_3M_TOT_CHARGE_AMT 489 ,smb.Avg_DEC_3M_USAGE_CHARGE_AMT from class1.smb 490 491 left join work.test 492 on smb.product_id=test.product_id; ERROR: File WORK.TEST.DATA does not exist. NOTE: PROC SQL set option NOEXEC and will continue to check the syntax of statements. 493 quit; NOTE: The SAS System stopped processing this step because of errors. NOTE: PROCEDURE SQL used (Total process time): real time 0.22 seconds cpu time 0.21 seconds 494
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