AtCoder Beginner Contest 160

传送门

A - Coffee

#include <bits/stdc++.h>
#define ll long long
using namespace std;
char s[10];
int main() {
    //freopen("in.txt","r",stdin);
    scanf("%s",s);
    if(s[2]==s[3]&&s[4]==s[5]) printf("Yes\n");
    else printf("No\n");
    return 0;
}

A.cpp