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Asked: 2026-06-17T13:43:33+00:00

I’m currently working on some OJ system, and the system will give out the

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I’m currently working on some OJ system, and the system will give out the TIME and MEMORY usage after my program is run. I know that there is ./time that could check out time usage, how about memory? Or is there any command that could check both?

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  1. Editorial Team

    Use valgrind.

    valgrind your_exec

    When your process exit, valgrind will output a summary of bytes allocated/freed during the execution time and how much space was still allocated just before exit

    Output example:

    ==840==
==840== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 17 from 1)
==840== malloc/free: in use at exit: 88,940 bytes in 163 blocks.
==840== malloc/free: 376 allocs, 213 frees, 208,624 bytes allocated.
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