Submission #1232766

#	Time	Username	Problem	Language	Result	Execution time	Memory
1232766		m5588ohammed	Closing Time (IOI23_closing)	C++20	8 / 100	79 ms	20268 KiB

closing

#include "closing.h"
#include <bits/stdc++.h>
using namespace std;
vector <array<long long,2>> v[200005];
long long n,x,y,k,ans;
void calc(){
    priority_queue <array<long long,4>> qu;
    qu.push({0,x,-1,0});
    qu.push({0,y,-1,1});
    while(!qu.empty()){
        auto [mydis,i,last,u]=qu.top();
        mydis*=-1;
        qu.pop();
        if(k>=mydis){
            ans++;
            k-=mydis;
        }
        else continue;
        for(auto [j,c]:v[i]){
            if(j==last) continue;
            qu.push({(mydis+c)*-1,j,i,u});
        }
    }
    return;
}
int max_score(int N, int X, int Y, long long K,vector<int> U, vector<int> V, vector<int> W)
{
    n=N,x=X,y=Y,k=K;
    ans=0;
    for(int i=0;i<n;i++) v[i].clear();
    for(int i=0;i<n-1;i++){
        v[U[i]].push_back({V[i],W[i]});
        v[V[i]].push_back({U[i],W[i]});
    }
    calc();
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 12
• Subtask 4: 0 / 14
• Subtask 5: 0 / 9
• Subtask 6: 0 / 11
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 17