代码

#include <bits/stdc++.h>
using namespace std;

inline int readint() {
  int f=1, r=0; char c=getchar();
  while(!isdigit(c)) { if(c=='-')f=-1; c=getchar(); }
  while(isdigit(c)) { r=r*10+c-'0'; c=getchar(); }
  return f*r;
}

inline void writeint(int x) {
  static char t[25], *pt; pt = t;
  if(x<0) { putchar('-'); x = -x; }
  do {
    *pt++ = x%10 + '0'; x /= 10;
  } while(x);
  pt--;
  while(pt>=t) putchar(*pt--);
  putchar(10);
}

int main() {
  int T, a, b;
  T = readint();
  while(T--) {
    a = readint(), b = readint();
    writeint(a + b);
  }
  return 0;
}

评测结果