代码

#include <cstdio>
#include <cstdlib>
#include <sys/mman.h>
#include <sys/stat.h>

int main() {
    char *p = reinterpret_cast<char *>(mmap(0, 1 << 26, PROT_READ, MAP_PRIVATE, fileno(stdin), 0));
    int n = strtol(p, &p, 10);
    for (int i = 1; i <= n; ++i) {
        int a = strtol(p, &p, 10);
        int b = strtol(p, &p, 10);
        printf("%d\n", a + b);
    }
}

评测结果