Parse integers Sergey Svistunov

Compute the sum of integers read from STDIN as fast as possible.

Input: 50 000 000 lines, each containing one integer in the range [0; 2147483647].

629871117
2024562523
1372689083
1021777120
2111176472

Output: The uint64 sum of all numbers, printed as a decimal string.

Note: Integer overflow is expected – use a 64-bit accumulator.

Back to listMay 20, 2026 16:08Victor MerckléVictor MerckléError
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Run Statistics
#DateScoreWall TimeCPU UserCPU SystemMemoryError
1May 20, 2026 16:08043,997,92830,778,000020,480Exit with code 1: diag8166 label=lseek bytes=524130469 cpu_ns=2105 wall_ns=2766 gbps_x1000=248993096 checksum=524130469 diag8166 label=mmap_populate bytes=524130469 cpu_ns=262901 wall_ns=262840 gbps_x1000=1993641 checksum=131053761069056 diag8166 label...stderr