c++:

# include <bits/stdc++.h>
using namespace std;
int main() {
    int a, b;
    scanf("%d%d", &a, &b);
    printf("%d", a + b);
    return 0;
}

c++极限两行：

# include <bits/stdc++.h>
using namespace std;int main() {int a, b;scanf("%d%d", &a, &b);printf("%d", a + b);return 0;}

python:

# 加;是个人习惯
a, b = map(int, input().split());
print(a + b, end='');