#3WA

P3612 [USACO17JAN] Secret Cow Code S

qz5zxieliyi @ 2023-07-20 17:24:50

#include<bits/stdc++.h>
using namespace std;
long long n,l;
string s;
int main()
{
    cin>>s>>n;
    l=s.size();
    while(l<=n)l=l*2;
    while(n>s.size())
    {
        l=l/2;
        if(n>l)n=n-l-1;
    }
    cout<<s[n-1];
    return 0;
}

by qz5zxieliyi @ 2023-07-20 20:35:38

@qz5zxieliyi 已过


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