Submission #1228088

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228088		Nika533	Cyberland (APIO23_cyberland)	C++17	44 / 100	3096 ms	135108 KiB

cyberland

#pragma GCC diagnostic warning "-std=c++11"
#include <bits/stdc++.h>
#include "cyberland.h"
#define pb push_back
#define f first
#define s second
#define MOD 1000000007
#define flush fflush(stdout)
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(), (x).rend()
#define pii pair<int,int>
using namespace std;
const int N=1e5+5;
int n,m,k,val[N],fix[N],fix2[N];
pair<double,int> dist[N][105];
vector<pair<int,int>> g[N];

void dfs2(int x) {
	if (fix2[x]) return;
	fix2[x]=1;
	for (auto AA:g[x]) {
		dfs2(AA.f);
	}
}

double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
    n=N; m=M; k=K;
    for (int i=1; i<=n; i++) {
    	g[i].clear(); fix[i]=0; fix2[i]=0;
    	for (int j=0; j<=k; j++) {
    		dist[i][j]={1e18,0};
		}
	}
	for (int i=1; i<=n; i++) {
		val[i]=arr[i-1];
	}
	for (int i=0; i<m; i++) {
		g[x[i]+1].pb({y[i]+1,c[i]});
		g[y[i]+1].pb({x[i]+1,c[i]});
//		cout<<x[i]+1<<" "<<y[i]+1<<endl;
	}
	val[1]=0;
	fix2[H+1]=2;
	dfs2(1);
	priority_queue<pair<long long,int>> q;
	for (int i=1; i<=n; i++) {
		if (val[i]==0 && fix2[i]==1) {
			dist[i][0].f=0;
			q.push({0,i});
		}
	}
	
	for (int j=0; j<=k; j++) {
		while (!q.empty()) {
			int v=q.top().s; q.pop();
			if (fix[v]) continue;
			fix[v]=1;
			for (auto AA:g[v]) {
				int u=AA.f;
				long long w=AA.s;
				if (dist[u][j].f>dist[v][j].f+w) {
					dist[u][j].f=dist[v][j].f+w;
					dist[u][j].s=1;
					q.push({-dist[u][j].f,u});
				}
			}
		}
		for (int i=1; i<=n; i++) {
			if (val[i]!=2) {
				dist[i][j+1]=dist[i][j];
			}
			else if (i!=H+1 && dist[i][j].s==1) {
				dist[i][j+1].f=dist[i][j].f/2;
				dist[i][j+1].s=0;
			}
			q.push({-dist[i][j+1].f,i});
			fix[i]=0;
		}
	}
	
	double ans=1e18,big=1e17;
	ans=dist[H+1][k].f;
	if (dist[H+1][k].f>=big) return -1;
	return ans;
}

Compilation message (stderr)

cyberland.cpp:1:32: warning: '-std=c++11' is not an option that controls warnings [-Wpragmas]
    1 | #pragma GCC diagnostic warning "-std=c++11"
      |                                ^~~~~~~~~~~~

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