代码

#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector")
#include <stdio.h>
#include <ctype.h>
char inbuf[2110],outbuf[2110],*inpos = inbuf,*outpos = outbuf,tbuf[20];
inline int get()
{
	register int res = 0, k = 1;
	while (!isdigit(*inpos))
		if (*inpos++ == '-')k = 0;
	do res = (res << 3) + (res << 1), res += (*inpos++) & 15;while (isdigit(*inpos));
	return k ? res : -res;
}
inline void put(register int n)
{
	register char* tpos = tbuf;
	if (n < 0) {*outpos++ = '-';n = -n;}
	do *tpos++ = 48 + n % 10;while (n /= 10);
	while (tpos != tbuf)*outpos++ = *--tpos;
}
int main()
{
	register int n;
	fread(inbuf, 1, 2110, stdin);
	n = get();
	while (n--) put(get() + get()), *outpos++ = '\n';
	fwrite(outbuf, 1, outpos - outbuf, stdout);
}

评测结果