Submission #1871044
Source Code Expand
#include <algorithm> #include <cctype> #include <complex> #include <iomanip> #include <iostream> #include <queue> #include <set> #include <string> #include <vector> using std::cin; using std::cout; using std::endl; using std::string; using std::to_string; using std::vector; using std::set; using std::queue; using std::priority_queue; using std::min; using std::max; using std::sort; using std::abs; bool solve(int n, const vector<vector<bool>>& g, const vector<int>& p) { int me = 0; for (int i = 0; i < n - 1; i++) { if (!g[me][p[i]]) { return false; } me = p[i]; } return true; } int main(void) { int n, m; cin >> n >> m; vector<vector<bool>> g(n, vector<bool>(n)); for (int i = 0; i < m; i++) { int a, b; cin >> a >> b; g[a - 1][b - 1] = true; g[b - 1][a - 1] = true; } int cnt = 0; vector<int> p(n - 1); iota(p.begin(), p.end(), 1); do { if (solve(n, g, p)) { cnt++; } } while (std::next_permutation(p.begin(), p.end())); cout << cnt << endl; return 0; }
Submission Info
Submission Time | |
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Task | C - One-stroke Path |
User | somq14 |
Language | C++14 (Clang 3.8.0) |
Score | 0 |
Code Size | 1194 Byte |
Status | CE |
Compile Error
./Main.cpp:52:5: error: use of undeclared identifier 'iota' iota(p.begin(), p.end(), 1); ^ 1 error generated.