Submission #2235426

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
int main(void){
    string input;
    cin>>input;
    int tmp=0;
    int a=input[0]-'0';
    int b=input[1]-'0';
    int c=input[2]-'0';
    int d=input[3]-'0';
    tmp=a+b+c+d;
    if(tmp==7){
        cout<<a<<"+"<<b<<"+"<<c<<"+"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a-b+c+d;
    if(tmp==7){
        cout<<a<<"-"<<b<<"+"<<c<<"+"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a+b-c+d;
    if(tmp==7){
        cout<<a<<"+"<<b<<"-"<<c<<"+"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a+b+c-d;
    if(tmp==7){
        cout<<a<<"+"<<b<<"+"<<c<<"-"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a-b-c+d;
    if(tmp==7){
        cout<<a<<"-"<<b<<"-"<<c<<"+"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a+b-c-d;
    if(tmp==7){
        cout<<a<<"+"<<b<<"-"<<c<<"-"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a-b+c-d;
    if(tmp==7){
        cout<<a<<"-"<<b<<"+"<<c<<"-"<<d<<"=7"<<endl;
        return 0;
    }
    tmp=a-b-c-d;
    if(tmp==7){
        cout<<a<<"-"<<b<<"-"<<c<<"-"<<d<<"=7"<<endl;
        return 0;
    }
}

Submission Info

Judge Result