Submission #320497

#TimeUsernameProblemLanguageResultExecution timeMemory
320497qpwoeirutBinary Subsequences (info1cup17_binary)C++17
0 / 100
1057 ms740 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; int T, K; string table[10001]; ll ct(string s) { set<string> ans; const int N = s.size(); for (int i=1; i<(1 << N); ++i) { string t; for (int j=0; j<N; ++j) { if ((i >> j) & 1) t += s[j]; } ans.emplace(t); } return ans.size(); } int L; void gen(const string s) { if (s.size() == L) { table[ct(s)] = s; return; } gen(s + '0'); gen(s + '1'); } int main() { cin.tie(0)->sync_with_stdio(0); cin >> T; for (L=12; L>0; --L) { gen(""); } for (int i=0; i<T; ++i) { cin >> K; if (table[K].size()) { cout << "-1\n" << table[K] << '\n'; } else { cout << "-1\n-1\n"; } } }

Compilation message (stderr)

binary.cpp: In function 'void gen(std::string)':
binary.cpp:24:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |     if (s.size() == L) {
      |         ~~~~~~~~~^~~~
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