CF2020A.FindMinimumOperations难度：红转换进制，每一位上数字相加。#include<bits/stdc++.h>#definelllonglongusingnamespacestd;llt,n,k,ans;intmain(){ios::sync_with_stdio(0);cin.tie(0),cout.tie(0);cin>>t;while(t--){cin&