代码

#include <stdio.h>
char _in[3000], _out[2000];
char _,_b[33],_p; bool neg; int _i = -1, _o = -1;
#define print(x) do{if(!x)_out[++_o]='0';if (x<0) _out[++_o]='-', x=-x;_p=0;do _b[++_p]=x%10+'0';while(x/=10);while (_p) _out[++_o]=_b[_p--];}while(0)
#define scan(x) do{x=_in[++_i];neg=0;if (x=='-') {neg=1; x=_in[++_i];}for (x&=15;'0'<=_in[++_i];x=(x<<3)+(x<<1)+(_in[_i]&15));if (neg)x=-x;}while(0)
int main() {
	fread_unlocked(_in,1,3000,stdin);
	int n,a,b,c;
	scan(n);
	while (n--) {
		scan(a); scan(b);
		c=a+b;
		print(c); _out[++_o]='\n';
	}
	fwrite_unlocked(_out,1,_o+1,stdout);
	return 0;
}

评测结果