#UVa：10469－To Carry or not to Carry

將加運算換成XOR運算即可得解。

C++(0.008)

/*******************************************************/
/* UVa 10469 To Carry or not to Carry                  */
/* Author: Maplewing [at] knightzone.studio            */
/* Version: 2012/11/29                                 */
/*******************************************************/
#include <iostream>
#include <cstdio>
using namespace std;

int main(){
  unsigned int a, b;
  while( scanf( "%u%u", &a, &b ) != EOF ){
    printf( "%u\n", a^b );
  }
  return 0;
}