代码

#include<cstdio>
using namespace std;
struct node{
    int x;
    friend node operator+(const node &a,const node &b){
        return (node){a.x+b.x};
    }
} a,b;
int main(){
    scanf("%d%d",&a.x,&b.x);
    printf("%d\n",(a+b).x);
    return 0;
}

评测结果