codeforce -Repeating Cipher
典型的签到题,一个for循环,取第1,1+2,1+2+3,1+2+3+4个数并输出
具体看代码:
// An highlighted block
#include<cstdio>
#include <iostream>
using namespace std;
int main(){
//freopen("in.txt","r",stdin);
//freopen("out.txt","w",stdout);
int n;
char ch[100];
cin>>n;
cin>>ch;
int c = 1;
for (int i = 0; i<n; i += c){
cout<<ch[i];
c++;
}
return 0;
}