oj.uz

답안 #51176

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
51176 2018-06-17T04:50:56 Z 노영훈(#1283, Diuven) 철도 요금 (JOI16_ho_t3) C++11
26 / 100
 185 ms 10128 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;

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]++;
                Q.push(x);
            }
        }
    }
}

void down(int v){
    //cout<<"OUT: "<<v<<'\n';
    ans++;
    for(int x:G[v]){
        if(dep[x]<=dep[v]) continue;
        up_deg[x]--;
        if(up_deg[x]==0) down(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);
    // a is upper
    up_deg[b]--;
    if(up_deg[b]==0){
        down(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 5 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2972 KB Output is correct
4 Correct 4 ms 2972 KB Output is correct
5 Correct 4 ms 2972 KB Output is correct
6 Correct 4 ms 2972 KB Output is correct
7 Correct 3 ms 2972 KB Output is correct
8 Correct 4 ms 2972 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2972 KB Output is correct
4 Correct 4 ms 2972 KB Output is correct
5 Correct 4 ms 2972 KB Output is correct
6 Correct 4 ms 2972 KB Output is correct
7 Correct 3 ms 2972 KB Output is correct
8 Correct 4 ms 2972 KB Output is correct
9 Correct 142 ms 9672 KB Output is correct
10 Correct 165 ms 9672 KB Output is correct
11 Correct 134 ms 9672 KB Output is correct
12 Correct 130 ms 9672 KB Output is correct
13 Correct 155 ms 9672 KB Output is correct
14 Correct 185 ms 9672 KB Output is correct
15 Correct 139 ms 10128 KB Output is correct
16 Correct 89 ms 10128 KB Output is correct

Subtask #3
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 180 ms 10128 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 4 ms 2792 KB Output is correct
3 Correct 5 ms 2972 KB Output is correct
4 Correct 4 ms 2972 KB Output is correct
5 Correct 4 ms 2972 KB Output is correct
6 Correct 4 ms 2972 KB Output is correct
7 Correct 3 ms 2972 KB Output is correct
8 Correct 4 ms 2972 KB Output is correct
9 Correct 142 ms 9672 KB Output is correct
10 Correct 165 ms 9672 KB Output is correct
11 Correct 134 ms 9672 KB Output is correct
12 Correct 130 ms 9672 KB Output is correct
13 Correct 155 ms 9672 KB Output is correct
14 Correct 185 ms 9672 KB Output is correct
15 Correct 139 ms 10128 KB Output is correct
16 Correct 89 ms 10128 KB Output is correct
17 Incorrect 180 ms 10128 KB Output isn't correct
18 Halted 0 ms 0 KB -