제출 #45456

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
45456	2018-04-14 07:01:40	nickyrio	One-Way Streets (CEOI17_oneway)	C++17	100 / 100	206 ms	62668 KiB

oneway

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#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define REP(i, a) for (int i = 0; i < (a); ++i)
#define DEBUG(x) { cerr << #x << '=' << x << endl; }
#define Arr(a, l, r) { cerr << #a << " = {"; FOR(_, l, r) cerr << ' ' << a[_]; cerr << "}\n"; }
#define N 1001000
#define pp pair<int, int>
#define endl '\n'
#define IO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define taskname ""
#define bit(S, i) (((S) >> (i)) & 1)
using namespace std;
int n, m, p, Redge[N];
vector<pp> e[N], newE[N];
int num[N], low[N], cnt, mark[N], nBico;
stack<int> st;
char res[N];
void dfs(int u, int p) {
    num[u] = low[u] = ++cnt;
    st.push(u);
    for(pp x : e[u]) if (x.second != p) {
        int v = x.first;
        if (num[v] == 0) {
            dfs(v, x.second);
            low[u] = min(low[v], low[u]);
            if (low[v] >= num[v]) {
                ++nBico;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

oneway.cpp: In function 'void dfs2(int, int)':
oneway.cpp:64:44: warning: statement has no effect [-Wunused-value]
         if (w[x.first] == 0) res[x.second] == 'B';
                              ~~~~~~~~~~~~~~^~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40