Submission #334407

#	Time	Username	Problem	Language	Result	Execution time	Memory
334407		amunduzbaev	Evacuation plan (IZhO18_plan)	C++14	0 / 100	2 ms	652 KiB

plan

#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long 
#define ld long double 
#define pii pair<int, int>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define prc(n) fixed << setprecision(n)
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pi acos(-1);
const int inf = 1e9+7;
const int N = 1e3+5;

vector<vector<pii>> edges(N);
int cur;
ll dis[N], used[N];

void dfs(int u, ll d, int pr){
	if(used[u]) {
		dis[u] = min(dis[u], d);
		return;
	}
	used[u] = 1;
	dis[u] = min(dis[u], d);
	for(auto x:edges[u]){
		if(x.ff == pr) continue;
		dfs(x.ff, d + x.ss, u);
	}
}

void solve(){
	fastios
	int n, m;
	cin>>n>>m;
	for(int i=0;i<m;i++){
		int a, b, w;
		cin>>a>>b>>w;
		edges[a].pb({b, w});
		edges[b].pb({a, w});
	}
	int k;
	cin>>k;
	memset(dis, inf, sizeof(dis));
	for(int i=0;i<k;i++){
		cin>>cur;
		dfs(cur, 0, -1);
		memset(used, 0, sizeof(dis));
	}
	
	int q;
	cin>>q;
	for(int i=0;i<q;i++){
		int f, s;
		cin>>f>>s;
		cout<<min(dis[f], dis[s])<<"\n";
	}
	
	return;
}
/*

5 6
1 2 4
1 3 6
1 4 2
3 2 9
4 5 12
1 5 7

*/
 
int main(){
	fastios
	int t = 1;
	//cin>>t;
	while(t--) solve();
	return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 46