absys.cpp

using namespace std;
#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<vector>
#include<limits>
#include<cmath>
#include<map>
#define LLU long long unsigned int
#define LLD long long double
#define FOR(i,N) for(int i=0;i<(N);i++)
string s1,s2,s3,s4,s5;
int conv(string s)
{
    int ret=0;
    FOR(i,s.length())
    {
        if(!isdigit(s[i])) return -1;
        ret=ret*10+(s[i]-'0');
    }
    return ret;
}
int main()
{
    int cases,v1,v2,v3;
    cin>>cases;
    while(cases--)
    {
        cin>>s1>>s2>>s3>>s4>>s5;
        v1=conv(s1);
        v2=conv(s3);
        v3=conv(s5);
        if(v1<0) v1=v3-v2;
        if(v2<0) v2=v3-v1;
        if(v3<0) v3=v1+v2;
        cout<<v1<<" + "<<v2<<" = "<<v3<<endl;
    }
    return 0;
}