1863A - Channel - CodeForces Solution

#include<bits/stdc++.h>
using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        long long total, online, n;
        cin >> total >> online >> n;
        string s;
        long long check = 0;
        cin >> s;
        bool flag = false;

        int online_subscribers = online;
        
            for (int i = 0; i < n; i++)
            
                {
                if (online>=total)
                {
                    check = 1;
                }
                
                if (s[i] == '-') {
                online--;}
                else
                {
                    online++;
                    online_subscribers++;
                }
                if (online>=total)
                {
                    check =1 ;
                }
                
                
            }
            if (online_subscribers>=total && check == 0)
            {
                check = 2;

            }
            
        if (check == 1)
        {
            cout<<"YES"<<endl;
        }
        else if (check == 2)
        {
            cout<<"MAYBE"<<endl;
        }
        else{
        cout<<"NO"<<endl;
                }
        

        
    }

    return 0;
}