oj.uz

답안 #123241

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123241 2019-06-30T16:06:00 Z miguel Valley (BOI19_valley) C++14
0 / 100
 817 ms 262148 KB 
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define dbg(x) cout << #x << '=' << x << '\n';
#define ll long long
#define sz size()
#define x first
#define y second
#define pi pair <int, int>
#define pii pair <pi, int>
#define vi vector <int>
const ll mod = 1000000007;
//#define int ll
int n, s, q, e;
vector<int> d;
int f[100001], l[100001];
pi road[100001];
bitset<100001> sh;
vector <pi> g[100001];

void dfs(int p, int cur){
    d.pb(cur);
    for(pi i: g[cur]){
        if(i.x!=p) dfs(cur, i.x);
    }
    d.pb(cur);
}

int32_t main(){
    ios_base :: sync_with_stdio(0); cin.tie(); cout.tie();
    cin>>n>>s>>q>>e;
    for(int i=1; i<=n; i++){
        int x, y, z;
        cin>>x>>y>>z;
        road[i]={x, y};
        g[x].pb({y, z});
        g[y].pb({x, z});
    }
    for(int i=1; i<=s; i++){
        int x;
        cin>>x;
        sh[x]=1;
    }
    if(s==n){
        dfs(0, e);
        for(int i=0; i<d.size(); i++){
            l[d[i]]=i;
            if(!f[i]) f[d[i]]=i;
        }
        for(int i=1; i<=q; i++){
            int rd, r;
            cin>>rd>>r;
            int x=road[rd].x, y=road[rd].y;
            if(f[x]<=f[r] && l[x]>=l[r] && f[y]<=f[r] && l[y]>=l[r]) cout<<0<<"\n";
            else cout<<"escaped";
        }
    }
}

Compilation message

valley.cpp: In function 'int32_t main()':
valley.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<d.size(); i++){
                      ~^~~~~~~~~

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 2680 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 2680 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 817 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 2680 KB Output isn't correct
2 Halted 0 ms 0 KB -