SPOJ – ABSYS- Anti-Blot System

#include<stdio.h>
#include<iostream>
#include<string>
using namespace std;
typedef long long ll;
/*float stof(const string& str, size_t *idx = 0);
double stod(const string& str, size_t *idx = 0);
long double stold(const string& str, size_t *idx = 0);
int stoi(const string& str, size_t *idx = 0, int base = 10);
long stol(const string& str, size_t *idx = 0, int base = 10);
unsigned long stoul(const string& str, size_t *idx = 0, int base = 10);
long long stoll(const string& str, size_t *idx = 0, int base = 10);
unsigned long long stoull(const string& str, size_t *idx = 0, int base = 10); */
int main()
{
 string a,b,c;
 char a1,b1;
 ll t;
 cin >>t;
 while(t--)
 {
 cin >>a>>a1>>b>>b1>>c;
 ll k,i;
 for(i=0;i<a.size();i++)
 {
 if(a[i]=='m')
 {
 k=0;
 break;
 }
 
 }
 for(i=0;i<b.size();i++)
 {
 if(b[i]=='m')
 {
 k=1;
 break;
 }
 
 }
 for(i=0;i<c.size();i++)
 {
 if(c[i]=='m')
 {
 k=2;
 break;
 }
 
 }
 if(k==0)
 cout << stoll(c)-stoll(b)<< " + "<<b<< " = "<< c << endl;
 else if(k==1)
 cout << a<< " + "<<stoll(c)-stoll(a)<< " = "<<c<< endl;
 else cout << a<< " + "<<b<< " = "<<stoll(a)+stoll(b)<< endl;
 }
 return 0;
}