Submission #36230

#	Time	Username	Problem	Language	Result	Execution time	Memory
36230		Flumen	Price List (POI13_cen)	C++11	0 / 100	189 ms	18868 KiB

cen

#include<bits/stdc++.h>
using namespace std;
vector<pair<int,int> >node[100100],node1[100100];
int ans[100100],mark[100100];
queue<pair<int,int> >Q;
priority_queue<pair<int,int> >X;
void d(int k,int b){
    int i;
    Q.push(make_pair(k,0));
    while(!Q.empty()){
        mark[Q.front().first]=1;
        for(i=0;i<node[Q.front().first].size();i++){
            if(mark[node[Q.front().first][i].first])continue;
            mark[node[Q.front().first][i].first]=1;
            Q.push(make_pair(node[Q.front().first][i].first,Q.front().first));
            if(Q.front().second!=0){
                node1[node[Q.front().first][i].first].push_back(make_pair(Q.front().second,b));
                node1[Q.front().second].push_back(make_pair(node[Q.front().first][i].first,b));
            }
        }
        Q.pop();
    }
}
void dij(int k){
    int i,x,y;
    X.push(make_pair(0,k));
    while(!X.empty()){
        x=X.top().second;
        y=X.top().first;
        X.pop();
        if(mark[x])continue;
        mark[x]=1;
        ans[x]=y*-1;
        for(i=0;i<node1[x].size();i++){
            if(mark[node1[x][i].first])continue;
            X.push(make_pair(y-node1[x][i].second,node1[x][i].first));
        }
    }
}
int main(){
    int n,m,k,a,b,i,x,y;
    scanf("%d%d%d%d%d",&n,&m,&k,&a,&b);
    for(i=0;i<m;i++)
    {
        scanf("%d%d",&x,&y);
        node[x].push_back(make_pair(y,a));
        node[y].push_back(make_pair(x,a));
        node1[x].push_back(make_pair(y,a));
        node1[y].push_back(make_pair(x,a));
    }
    d(k,b);
    for(i=1;i<=n;i++)mark[i]=0;
    dij(k);
    for(i=1;i<=n;i++)printf("%d\n",ans[i]);
    return 0;
}

Compilation message (stderr)

cen.cpp: In function 'void d(int, int)':
cen.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(i=0;i<node[Q.front().first].size();i++){
                  ^
cen.cpp: In function 'void dij(int)':
cen.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(i=0;i<node1[x].size();i++){
                  ^
cen.cpp: In function 'int main()':
cen.cpp:42:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d%d%d",&n,&m,&k,&a,&b);
                                       ^
cen.cpp:45:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&x,&y);
                            ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10