don't know why, a.out is a cpp program making a 400MB size vector

[joshuaho67]

$ timeout/timeout -m 1000000 ./a.out ps: illegal argument: f usage: ps [-AaCcEefhjlMmrSTvwXx] [-O fmt | -o fmt] [-G gid[,gid...]] [-g grp[,grp...]] [-u [uid,uid...]] [-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]] ps [-L] INTERNAL CPU 0.00 MEM 0 MAXMEM -1 STALE 0 MAXMEM_RSS -1 Fail: Bad close ps: at timeout/timeout line 253.