正经题解

#include <iostream>
using namespace std;

int main() {
    int d,m,w,i,j,k;
    cin>>d>>m>>w>>i>>j>>k;
    int day;
    day = d*m*(k-1)+(j-1)*d+i;
    day--;
    day%=w;
    cout<<char(day+'a');
    return 0;
}