阅读程序，填写对应的输出结果

1. cout << 2 + 3 << endl;
   {{ input(1) }}
2. cout << 188 - 166 << endl;
   {{ input(2) }}
3. cout << 2 * 31 << endl;
   {{ input(3) }}
4. cout << 5 / 2 << endl;
   {{ input(4) }}
5. cout << 15 % 4 << endl;
   {{ input(5) }}