Submission #199361

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
199361	2020-01-31 16:14:56	nvmdava	One-Way Streets (CEOI17_oneway)	C++17	100 / 100	487 ms	57336 KiB

oneway

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#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define ll long long
#define ff first
#define ss second
#define N 100005
#define MOD 1000000007
vector<int> adj[N];
int v[N], u[N];
int dsu[N];
int dep[N], low[N];
int ans[N];
int find(int x){
    return x == dsu[x] ? x : dsu[x] = find(dsu[x]);
}
void merge(int a, int b){
    dsu[find(a)] = find(b);
}
int proc[N];
void dfs(int v, int p){
    ++proc[v];
    low[v] = dep[v] = dep[::v[p] ^ ::u[p] ^ v] + 1;
    
    for(auto& x : adj[v]){
        if(x == p) continue;
 
 
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Compilation message (stderr)

oneway.cpp: In function 'void dfs2(int, int)':
oneway.cpp:62:32: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
         if(val ^ (v == ::v[p]) == 1)
                  ~~~~~~~~~~~~~~^~~~

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