Submission #983093

#	Time	Username	Problem	Language	Result	Execution time	Memory
983093		abushbandit_	Cyberland (APIO23_cyberland)	C++17	15 / 100	1004 ms	2097152 KiB

cyberland

#include <bits/stdc++.h>

using namespace std;

#define pb push_back

double solve(int n, int m, int k, int h, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> a) {
    
    vector<vector<pair<int,long double>>> g(n);
    for(int i = 0;i < m;i++){
		g[x[i]].pb({y[i],c[i]});
		g[y[i]].pb({x[i],c[i]});
	}
	set<tuple<long double,int,int>> q;
	q.insert({0,0,k});
	long double dis[n][k + 1];
	for(int i = 0;i < n;i++){
		for(int j = 0;j <= k;j++){
			dis[i][j] = 1e18;
		}
	}
	dis[0][k] = 0;
	while(!q.empty()){
		auto [cost,v,nk] = *q.begin();q.erase(*q.begin());
		if(dis[v][nk] < cost) continue;
		for(auto [to,w] : g[v]){
			if(a[to] == 0){
				if(dis[to][nk] > 0){
					dis[to][nk] = 0;
					q.insert({0,to,nk});
				}
			} else if(a[to] == 1){
				if(dis[v][nk] + w < dis[to][nk]){
					dis[to][nk] = dis[v][nk] + w;
					q.insert({dis[to][nk],to,nk});
				}
			} else{
				if(nk == 0){
					if(dis[v][nk] + w < dis[to][nk]){
						dis[to][nk] = dis[v][nk] + w;
						q.insert({dis[to][nk],to,nk});
					}
				} else{
					if((dis[v][nk] + w) / 2 < dis[to][nk]){
						dis[to][nk] = (dis[v][nk] + w) / 2;
						q.insert({dis[to][nk],to,nk});
					}
				}
			}
		}
	}
	long double ans = 1e18;
	for(int i = 0;i <= k;i++){
		ans = min(ans,dis[h][i]);
	}
	if(ans == 1e18) ans = -1;
	return ans;
    
}

• Subtask 1: 0 / 5
• Subtask 2: 8 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 7 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3