#include <iostream>
using namespace std;
int a, b, so = 0;
char mt[10000][10000];
const char ma[7] = {'R','O','Y','G','B','I','P'};
int main() 
{
    cin >> a >> b;
    for(int i = 0; i < a; i++)
        for(int j = 0; j < b; j++)
            {
                mt[i][j] = ma[so];
                so++;
                if(so > 6) so = 0;
            }
    for(int i = 0; i < a; i++)
    {
        for(int j = 0; j < b; j++)
            cout << mt[i][j] << " ";
        cout << "\n";
    }
    return 0;
}

$#khanhtaon$

#include <iostream>
#include <vector>
using namespace std;
string g(int m,int n,int x,int y) {
vector<char> c1={'R','O','Y','G','B','I','P'};
int t=c1.size();
long long c2=(m*n)/t;
long long r=(m*n)%t;
int c3=(x-1)*n+y-1;
if (c3<r) {
return string(1,c1[c3]);
} else {
int c4=c3-r;
return string(1,c1[c4%t]);
}
}
int main() {
long long m2,n2,x2,y2;
cin>>m2>>n2>>x2>>y2;
string c5=g(m2,n2,x2,y2);
cout<<c5<<endl;
return 0;
}