# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
16393 | comet | Crocodile's Underground City (IOI11_crocodile) | C++98 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "crocodile.h"
#include<algorithm>
#include<vector>
#include<queue>
#define pb push_back
using namespace std;
typedef pair<int,int> pp;
typedef vector<pp> vec;
vector<vec> path;
int d[100000][2];
bool visit[100000][2];
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
path.assign(N,vec());
memset(d,0x3f,sizeof(d));
for(int i=0;i<M;i++){
path[R[i][0]].pb(pp(R[i][1],L[i]));
path[R[i][1]].pb(pp(R[i][0],L[i]));
}
int INF=d[0][0];
queue<pp> Q;
for(int i=0;i<K;i++){
Q.push(pp(0,P[i]));
d[P[i]][0]=0;
}
int v,c;
while(!Q.empty()){
v=Q.top().second;
c=-Q.top().first;
Q.pop();
for(int i=0;i<path[v].size();i++){
int u=path[v][i].first;
int w=path[v][i].second;
if(d[u][0]>=c+w){
swap(d[u][0],d[u][1]);
d[u][0]=c+w;
if(d[u][1]<INF)Q.push(pp(-d[u][1],u));
}
else if(d[u][1]>c+w){
d[u][1]=c+w;
Q.push(pp(-d[u][1],u));
}
}
}
return d[0][1];
}