oj.uz

답안 #35803

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
35803 2017-11-30T14:25:42 Z moonrabbit2 주유소 (KOI16_gas) C++11
34 / 100
 1216 ms 37412 KB 
#include <bits/stdc++.h>
#define MAXV 3000
#define INF 10000000
using namespace std;
typedef pair<int,int> P;
struct city
{
    int num;
    int cost;
};
vector<pair<int,int>>graph[MAXV];
int v,e,k;
int dist[MAXV][MAXV];
int ans[MAXV];
city cities[MAXV];
bool f(city a,city b)
{
    if(a.cost==b.cost)
        return a.num<b.num;
    return a.cost>b.cost;
}
int main()
{
    scanf("%d %d",&v,&e);
    for(int i=0;i<v;i++){
        cities[i].num=i;
        scanf("%d",&cities[i].cost);
    }
    for(int i=0;i<v;i++){
        for(int j=0;j<v;j++){
            if(i!=j)
                dist[i][j]=INF;
        }
    }
    for(int i=0;i<e;i++){
        int u,v,w;
        scanf("%d %d %d",&u,&v,&w);
        graph[u-1].push_back(P(v-1,w));
        graph[v-1].push_back(P(u-1,w));
    }
    priority_queue<P,vector<P>,greater<P>>PQ;
    for(int k=0;k<v;k++){
        bool visit[MAXV];
        PQ.push(P(0,k));
        P tp;
        while(!PQ.empty()){
            tp=PQ.top();
            PQ.pop();
            if(dist[k][tp.second]<tp.first)
                continue;
            for(int j=0;j<graph[tp.second].size();j++){
                if(dist[k][graph[tp.second][j].first]>dist[k][tp.second]+graph[tp.second][j].second){
                    dist[k][graph[tp.second][j].first]=dist[k][tp.second]+graph[tp.second][j].second;
                    P t;
                    t.first=dist[k][graph[tp.second][j].first];
                    t.second=graph[tp.second][j].first;
                    PQ.push(t);
                }
            }
        }
    }
    sort(cities+1,cities+v-1,f);
    for(int i=1;i<v;i++){
        ans[cities[i].num]=INF;
        for(int j=0;j<i;j++){
            ans[cities[i].num]=min(ans[cities[i].num],ans[cities[j].num]+dist[cities[j].num][cities[i].num]*cities[j].cost);
        }
    }
    printf("%d",ans[v-1]);
    return 0;
}

Compilation message

gas.cpp: In function 'int main()':
gas.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j=0;j<graph[tp.second].size();j++){
                          ^
gas.cpp:43:14: warning: unused variable 'visit' [-Wunused-variable]
         bool visit[MAXV];
              ^
gas.cpp:24:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&v,&e);
                         ^
gas.cpp:27:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&cities[i].cost);
                                    ^
gas.cpp:37:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&u,&v,&w);
                                   ^

Subtask #1
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 37280 KB Output is correct
2 Correct 0 ms 37280 KB Output is correct
3 Correct 0 ms 37280 KB Output is correct
4 Correct 0 ms 37280 KB Output is correct
5 Correct 0 ms 37280 KB Output is correct
6 Correct 0 ms 37280 KB Output is correct
7 Correct 0 ms 37280 KB Output is correct
8 Correct 0 ms 37280 KB Output is correct
9 Correct 0 ms 37280 KB Output is correct
10 Correct 0 ms 37280 KB Output is correct
11 Correct 0 ms 37280 KB Output is correct
12 Correct 0 ms 37280 KB Output is correct
13 Correct 0 ms 37280 KB Output is correct

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 243 ms 37412 KB Output is correct
2 Incorrect 286 ms 37412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 226 ms 37412 KB Output is correct
2 Correct 953 ms 37412 KB Output is correct
3 Correct 979 ms 37412 KB Output is correct
4 Correct 999 ms 37412 KB Output is correct
5 Correct 969 ms 37412 KB Output is correct
6 Correct 1196 ms 37412 KB Output is correct
7 Correct 1123 ms 37412 KB Output is correct
8 Correct 1216 ms 37412 KB Output is correct
9 Correct 959 ms 37412 KB Output is correct
10 Correct 973 ms 37412 KB Output is correct
11 Correct 973 ms 37412 KB Output is correct

Subtask #4
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 37280 KB Output is correct
2 Correct 0 ms 37280 KB Output is correct
3 Correct 0 ms 37280 KB Output is correct
4 Correct 0 ms 37280 KB Output is correct
5 Correct 0 ms 37280 KB Output is correct
6 Correct 0 ms 37280 KB Output is correct
7 Correct 0 ms 37280 KB Output is correct
8 Correct 0 ms 37280 KB Output is correct
9 Correct 0 ms 37280 KB Output is correct
10 Correct 0 ms 37280 KB Output is correct
11 Correct 0 ms 37280 KB Output is correct
12 Correct 0 ms 37280 KB Output is correct
13 Correct 0 ms 37280 KB Output is correct
14 Incorrect 16 ms 37280 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 37280 KB Output is correct
2 Correct 0 ms 37280 KB Output is correct
3 Correct 0 ms 37280 KB Output is correct
4 Correct 0 ms 37280 KB Output is correct
5 Correct 0 ms 37280 KB Output is correct
6 Correct 0 ms 37280 KB Output is correct
7 Correct 0 ms 37280 KB Output is correct
8 Correct 0 ms 37280 KB Output is correct
9 Correct 0 ms 37280 KB Output is correct
10 Correct 0 ms 37280 KB Output is correct
11 Correct 0 ms 37280 KB Output is correct
12 Correct 0 ms 37280 KB Output is correct
13 Correct 0 ms 37280 KB Output is correct
14 Correct 243 ms 37412 KB Output is correct
15 Incorrect 286 ms 37412 KB Output isn't correct
16 Halted 0 ms 0 KB -