#include <iostream>
#include <map>
using namespace std;

int main() {
    map<pair<int, int>, int> visited;
    
    if(visited.find(make_pair(2, 3)) != visited.end()) { // mapata ima kluc (2, 3)
        
    }
    else {
        visited[make_pair(2, 3)] = 10;
    }
    return 0;
}
/*
 B......
 .......
 .......
 .......
 .......
 .......
 DA...aT
 
 
 **/