1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
#include<bits/stdc++.h> using namespace std; int main() { string s; cin >> s; int mx = 0; int ans = 0; for(int i = 0; i < s.size() - 1; i++) { if(s[i] == s[i+1]){ ans++; } else { mx = max(ans + 1, mx); ans=0; } } mx = max(ans + 1, mx); cout << (mx >= 7 ? "YES" : "NO") << endl; }