Submission #29366

#	Time	Username	Problem	Language	Result	Execution time	Memory
29366		aybala	Crocodile's Underground City (IOI11_crocodile)	C++11	100 / 100	1669 ms	199548 KiB

crocodile

#include<bits/stdc++.h>
#define fori(a,b,c) for(a=b; a<c; a++)
#define ford(a,b,c) for(a=b; a>=c; a--)
#define mp make_pair
#define pb push_back
#define ll long long
#define pii pair<int,int>
#define fi first
#define se second
#define fr front
#define emp empty
#define pq priority_queue
#define pll pair<long,long>
using namespace std;

vector< pii >v[100005];
int ex[100005];
pq< pll >q;
ll dis[100005];

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){	
	int i,j,k;
	fori(i,0,M){
		v[R[i][0]].pb(mp(L[i],R[i][1]));
		v[R[i][1]].pb(mp(L[i],R[i][0]));	
		//dis[i]=-1;
	}
	
	fori(i,0,K){
		ex[P[i]]=1;
		dis[P[i]]=0;	
		q.push(mp(0,P[i]));
	}
	
	while(!q.empty()){
		int t=q.top().se;
		int tfi=-q.top().fi;
		int s=v[t].size();
		q.pop();
		ex[t]++;
		if(ex[t]!=2){
			continue;
		}
		ex[t]++;
		dis[t]=tfi;
		fori(i,0,s){
			//if(ex[t]==2){
				//if((dis[v[t][i].se]>dis[t]+v[t][i].fi && ex[v[t][i].se]!=1) || (ex[v[t][i].se]==1 && dis[v[t][i].se]<dis[t]+v[t][i].fi)){
				//	dis[v[t][i].se]=dis[t]+v[t][i].fi;
					dis[t]=tfi;
					q.push(mp(-dis[t]-v[t][i].fi,v[t][i].se));
				//}
			//}
			
			
		}
	}
	return dis[0];
}

Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:22:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k;
        ^
crocodile.cpp:22:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k;
          ^

• Subtask 1: 46 / 46
• Subtask 2: 43 / 43
• Subtask 3: 11 / 11