oj.uz

답안 #980787

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
980787 2024-05-12T12:03:19 Z oleh1421 봉쇄 시간 (IOI23_closing) C++17
0 / 100
 231 ms 48436 KB 
#include "closing.h"

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
vector<vector<pair<int,ll> > >g;
vector<vector<ll> >d;
vector<int>p;
void dfs(int v,int pr,int j){
    p[v]=pr;
    for (auto [to,w]:g[v]){
        if (to==pr) continue;
        d[j][to]=d[j][v]+w;
        dfs(to,v,j);
    }
}
int max_score(int N, int X, int Y, long long K,
              std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
    g.clear();
    d.clear();
    p.clear();
    g.resize(N+1);
    d.resize(2,vector<ll>(N+1,0));
    p.resize(N+1,-1);
    for (int i=0;i<N-1;i++){
        g[U[i]].push_back({V[i],W[i]});
        g[V[i]].push_back({U[i],W[i]});
    }
    {
        d[0][X]=0;
        dfs(X,-1,0);
    }
    {
        d[1][Y]=0;
        dfs(Y,-1,1);
    }
    set<pair<ll,int> >st;
    vector<pair<ll,int> >v;
    for (int i=0;i<N;i++){
        st.insert({min(d[0][i],d[1][i]),i});
        v.push_back({max(d[0][i],d[1][i]),i});
    }
    sort(v.begin(),v.end());
    ll sum=0ll;
    int ans=2;
    int cnt1=0;
    for (auto [dist,i]:v){
        int cnt2=0;
        ll sum2=sum;
        for (auto cur:st){
            sum2+=cur.first;
            if (sum2>K) break;
            cnt2++;
        }
        ans=max(ans,cnt1+cnt2);
        sum+=dist;
        st.erase({min(d[0][i],d[1][i]),i});
        cnt1++;
    }
    if (sum<=K){
        ans=2*N;
    }
    return ans;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 231 ms 48436 KB 1st lines differ - on the 1st token, expected: '451', found: '199999'
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
3 Halted 0 ms 0 KB -

Subtask #4
0.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
3 Halted 0 ms 0 KB -

Subtask #5
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
4 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
4 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
4 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
4 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Incorrect 0 ms 344 KB 1st lines differ - on the 1st token, expected: '30', found: '19'
4 Halted 0 ms 0 KB -