제출 #616917

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
616917	2022-08-01 07:40:30	nghiass001	Mousetrap (CEOI17_mousetrap)	C++17	100 / 100	1114 ms	217292 KiB

mousetrap

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#include <bits/stdc++.h>
#define FOR(i, l, r) for(int i=(l); i<=(r); ++i)
#define REP(i, l, r) for(int i=(l); i<(r); ++i)
#define FORD(i, r, l) for(int i=(r); i>=(l); --i)
#define REPD(i, r, l)  for(int i=(r)-1; i>=(l); --i)
using namespace std;
const int N = 1e6 + 5;
int n, trap, mouse, cstep[N], deg[N], sdeg[N], p[N], avail[N];
vector<int> S[N], Q[N];
 
void Enter() {
    cin >> n >> trap >> mouse;
    REP(i, 1, n) {
        int u, v;
        cin >> u >> v;
        S[u].push_back(v);
        S[v].push_back(u);
    }
}
 
void DFS(int u, int pa) {
    if (u == mouse) avail[u] = 1;
    p[u] = pa;
    for(int v : S[u]) if (v != pa) {
        DFS(v, u);
        if (avail[v]) avail[u] = 1;
        else {
            Q[u].push_back(v);
            ++deg[u];
        }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

mousetrap.cpp: In function 'int main()':
mousetrap.cpp:73:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |         freopen(file".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mousetrap.cpp:74:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |         freopen(file".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 20 / 20
• Subtask 4: 35 / 35