제출 #103596

#제출 시각아이디문제언어결과실행 시간메모리
103596luciocf어르신 집배원 (BOI14_postmen)C++14
38 / 100
1095 ms21112 KiB
#include <bits/stdc++.h> using namespace std; const int maxn = 5e5+10; typedef pair<int, int> pii; int stk[maxn], tt; bool markEdge[maxn], mark[maxn]; vector<pii> grafo[maxn]; void dfs(int u) { if (mark[u]) { while (true) { int v = stk[tt--]; mark[v] = 0; if (v == u) { printf("%d\n", v); break; } printf("%d ", v); } } for (auto v: grafo[u]) { if (!markEdge[v.second]) { mark[u] = 1; stk[++tt] = u; markEdge[v.second] = 1; dfs(v.first); } } } int main(void) { int n, m; scanf("%d %d", &n, &m); for (int i = 1; i <= m; i++) { int u, v; scanf("%d %d", &u, &v); grafo[u].push_back({v, i}); grafo[v].push_back({u, i}); } dfs(1); }

컴파일 시 표준 에러 (stderr) 메시지

postmen.cpp: In function 'int main()':
postmen.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
postmen.cpp:56:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &u, &v);
   ~~~~~^~~~~~~~~~~~~~~~~
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