代码

#include <cstdio>

char ibuf[8192], *ied = ibuf + 8192, *ips = ied;
#define gc() ips == ied && (ied = (ips = ibuf) + fread(ibuf, 1, 8192, stdin), ips == ied) ? EOF : *ips ++
void read(int & x) {
	x = 0; bool f = 0; char c = gc();
	while (c < '0' || c > '9') {f |= c == '-'; c = gc();}
	while (c >= '0' && c <= '9') {(x = (x << 3) + (x << 1)) += c & 15; c = gc();}
	x = f ? x : -x;
}

main() {
	int n; read(n);
	while (n --) {
		int a, b; read(a); read(b);
		printf("%d\n", a + b);
	}
}

评测结果