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20 lines
272 B
C++
20 lines
272 B
C++
#include <iostream>
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#include <string>
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using namespace std;
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int main()
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{
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string s;
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cin >> s;
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if (s.find("0000000") != -1 || s.find("1111111") != -1)
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{
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cout << "YES" << endl;
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}
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else
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{
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cout << "NO" << endl;
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}
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return 0;
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}
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