Luogu P2788 Math 1 (math1) - Addition and Subtraction Problem Solutions

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This problem can use the magic of C++:

#include<bits/stdc++.h>
using namespace std;
int ans,t;
int main(){
    while(cin>>t) ans+=t;
    printf("%d\n",ans);return 0;
}

 

That's right! It's that simple!