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#include<iostream> #include<string> #include<vector> #include<algorithm> using namespace std; int main(){ int num; cin>>num; int s = 666; vector<int> vec; vec.push_back(s); while(vec.size()<num){ s++; string str = to_string(s); for(int i=0;i<=str.size()-3;i++){ if(str[i] == '6' && str[i+1] =='6' && str[i+2] == '6'){ if(find(vec.begin(),vec.end(),s)==vec.end()){ vec.push_back(s); } break; } } } cout<<vec[num-1]; }
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