Gondola Groups

#include <iostream>
#include <vector> 
using namespace std;
int main(){
	unsigned long int n;
	cin >> n;
	vector <int> g;
	short int r;
	while (true){
		unsigned long int i;
		cin >> i;
		g.push_back(i);
		for (unsigned long int j =0;j < (g.size());j++) {
			if (g[j]%4 == 0){
				r = 1;
				for (unsigned long int k =0;k < (g.size());k++) { 
					if ( g[k] == g[j]-1 ||g[k] == g[j]-2 || g[k] == g[j]-3 ) {
						r++;
						if (r == 4){
							cout << (g[j]/4);
							exit(0);
						}
					}
				}
			}
		}
	}
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Verdict: TIME LIMIT EXCEEDED

Test 4

Verdict: TIME LIMIT EXCEEDED

Test 5

Verdict: TIME LIMIT EXCEEDED

Test 6

Verdict: TIME LIMIT EXCEEDED

Test 7

Verdict: TIME LIMIT EXCEEDED

Test 8

Verdict: TIME LIMIT EXCEEDED

Test 9

Verdict: TIME LIMIT EXCEEDED

Test 10

Verdict: TIME LIMIT EXCEEDED