1925A - We Got Everything Covered - CodeForces Solution

// Online C++ compiler to run C++ program online
#include <bits/stdc++.h>
using namespace std;
void solve()
{
    int n,k;
    cin>>n>>k;
    string s;
    for(int i=0;i<k;i++)
    {
        s.push_back('a'+i);
        
    }
    
    for(int i=0;i<n;i++)
    {
        cout<<s;
    }
    cout<<endl;
    
}
int main() {
    int t;
    cin>>t;
    
    while(t--)solve();
}