oj.uz

답안 #51180

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
51180 2018-06-17T05:50:27 Z 노영훈(#1283, Diuven) 철도 요금 (JOI16_ho_t3) C++11
26 / 100
 153 ms 10268 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
const int MX=100010, inf=2e9;

struct edge {
    int u, v;
} E[2*MX];
vector<int> G[MX];

int n, m, q;
int up_deg[MX];
int dep[MX];
int ans;
bool done[MX];

void init(){
    queue<int> Q;
    fill(dep, dep+n+1, -1);
    dep[1]=0; Q.push(1);
    while(!Q.empty()){
        int v=Q.front(); Q.pop();
        for(int x:G[v]){
            if(dep[x]==dep[v]+1) up_deg[x]++;
            if(dep[x]<0){
                dep[x]=dep[v]+1; up_deg[x]=1;
                Q.push(x);
            }
        }
    }
}

void erase(int v){
    //cout<<"OUT: "<<v<<'\n';
    ans++;
    done[v]=true;
    for(int x:G[v]){
        if(dep[x]<=dep[v] || done[x]) continue;
        up_deg[x]--;
        if(up_deg[x]==0) erase(x);
    }
}

void upt(int r){
    int a=E[r].u, b=E[r].v;
    if(dep[a]==dep[b]) return;
    if(dep[a]>dep[b]) swap(a,b);
    if(done[a]) return;
    // a is upper
    up_deg[b]--;
    if(up_deg[b]==0){
        erase(b);
    }
}

int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n>>m>>q;
    for(int i=1, u, v; i<=m; i++){
        cin>>u>>v;
        E[i]={u,v};
        G[u].push_back(v);
        G[v].push_back(u);
    }
    init();
    for(int i=1, r; i<=q; i++){
        cin>>r;
        upt(r);
        cout<<ans<<'\n';
    }
    return 0;
}

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2788 KB Output is correct
3 Correct 6 ms 2992 KB Output is correct
4 Correct 5 ms 2992 KB Output is correct
5 Correct 4 ms 2992 KB Output is correct
6 Correct 4 ms 2992 KB Output is correct
7 Correct 4 ms 2992 KB Output is correct
8 Correct 4 ms 2992 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2788 KB Output is correct
3 Correct 6 ms 2992 KB Output is correct
4 Correct 5 ms 2992 KB Output is correct
5 Correct 4 ms 2992 KB Output is correct
6 Correct 4 ms 2992 KB Output is correct
7 Correct 4 ms 2992 KB Output is correct
8 Correct 4 ms 2992 KB Output is correct
9 Correct 120 ms 9636 KB Output is correct
10 Correct 117 ms 9636 KB Output is correct
11 Correct 153 ms 9636 KB Output is correct
12 Correct 104 ms 9636 KB Output is correct
13 Correct 108 ms 9636 KB Output is correct
14 Correct 118 ms 9636 KB Output is correct
15 Correct 83 ms 10268 KB Output is correct
16 Correct 71 ms 10268 KB Output is correct

Subtask #3
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 113 ms 10268 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2788 KB Output is correct
3 Correct 6 ms 2992 KB Output is correct
4 Correct 5 ms 2992 KB Output is correct
5 Correct 4 ms 2992 KB Output is correct
6 Correct 4 ms 2992 KB Output is correct
7 Correct 4 ms 2992 KB Output is correct
8 Correct 4 ms 2992 KB Output is correct
9 Correct 120 ms 9636 KB Output is correct
10 Correct 117 ms 9636 KB Output is correct
11 Correct 153 ms 9636 KB Output is correct
12 Correct 104 ms 9636 KB Output is correct
13 Correct 108 ms 9636 KB Output is correct
14 Correct 118 ms 9636 KB Output is correct
15 Correct 83 ms 10268 KB Output is correct
16 Correct 71 ms 10268 KB Output is correct
17 Incorrect 113 ms 10268 KB Output isn't correct
18 Halted 0 ms 0 KB -