http://codeforces.com/problemset/problem/96/A
生词:
没有
题面:
太水,不想说。
// codeforces
// 96A
// implementation, strings
#include <iostream>
#include <string>
using namespace std;
int main() {
string s;
while (cin >> s) {
bool f = false;
int len = (int)s.length();
int cnt = 1;
for (int i = 1; i < len; ++i) {
if (s.at(i) == s.at(i - 1))
cnt++;
else
cnt = 1;
if (cnt == 7) {
f = true;
break;
}
}
cout << (f ? "YES" : "NO") << endl;
}
return 0;
}
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