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답안 #153917

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153917 2019-09-17T13:27:07 Z mhy908 날다람쥐 (JOI14_ho_t4) C++14
50 / 100
 496 ms 47668 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define mp make_pair
#define llinf 8987654321987654321
#define inf 1987654321
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
int n, m;
LL x;
LL h[100010];
vector<pair<int, LL> > link[100010];
priority_queue<pair<LL, pair<int, LL> > > pq;
LL dijk[100010];
int main()
{
    scanf("%d %d %d", &n, &m, &x);
    for(int i=1; i<=n; i++)scanf("%lld", &h[i]);
    for(int i=1; i<=m; i++){
        int a, b;
        LL c;
        scanf("%d %d %lld", &a, &b, &c);
        link[a].pb({b, c});
        link[b].pb({a, c});
    }
    pq.push({0, {-1, -x}});
    for(int i=1; i<=n; i++)dijk[i]=llinf;
    while(!pq.empty()){
        int here=-pq.top().S.F;
        LL x=-pq.top().S.S;
        LL c=-pq.top().F;
        pq.pop();
        if(c>=dijk[here])continue;
        dijk[here]=c;
        for(int i=0; i<link[here].size(); i++){
            int next=link[here][i].F;
            if(h[here]<link[here][i].S)continue;
            if(x>=link[here][i].S&&x-link[here][i].S>h[link[here][i].F]){
                //printf("%lld %d %lld\n", c+x-h[link[here][i].F]+link[here][i].S, link[here][i].F, h[link[here][i].F]);
                pq.push({-(c+x-(h[link[here][i].F]+link[here][i].S)+link[here][i].S), {-link[here][i].F, -h[link[here][i].F]}});
            }
            else if(x>=link[here][i].S){
                //printf("%lld %d %lld\n", c+link[here][i].S, link[here][i].F, x-link[here][i].S);
                pq.push({-(c+link[here][i].S), {-link[here][i].F, -(x-link[here][i].S)}});
            }
            else{
                //printf("%lld %d %lld\n", c+link[here][i].S*2-x, link[here][i].F, 0ll);
                pq.push({-(c+link[here][i].S*2-x), {-link[here][i].F, 0ll}});
            }
        }
    }
    if(dijk[n]==llinf)printf("-1");
    else printf("%lld", dijk[n]+h[n]);
}

Compilation message

2014_ho_t4.cpp: In function 'int main()':
2014_ho_t4.cpp:20:33: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'LL* {aka long long int*}' [-Wformat=]
     scanf("%d %d %d", &n, &m, &x);
                               ~~^
2014_ho_t4.cpp:38:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<link[here].size(); i++){
                      ~^~~~~~~~~~~~~~~~~~
2014_ho_t4.cpp:39:17: warning: unused variable 'next' [-Wunused-variable]
             int next=link[here][i].F;
                 ^~~~
2014_ho_t4.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &m, &x);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
2014_ho_t4.cpp:21:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1; i<=n; i++)scanf("%lld", &h[i]);
                            ~~~~~^~~~~~~~~~~~~~~
2014_ho_t4.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %lld", &a, &b, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2680 KB Output is correct
2 Correct 7 ms 2936 KB Output is correct
3 Correct 11 ms 2936 KB Output is correct
4 Correct 6 ms 2808 KB Output is correct
5 Correct 7 ms 2808 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 7 ms 2936 KB Output is correct
9 Correct 7 ms 2936 KB Output is correct
10 Correct 7 ms 2936 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 8 ms 2940 KB Output is correct
13 Correct 8 ms 2936 KB Output is correct
14 Correct 5 ms 2808 KB Output is correct
15 Correct 6 ms 2936 KB Output is correct
16 Correct 5 ms 2808 KB Output is correct
17 Correct 5 ms 2680 KB Output is correct
18 Correct 5 ms 2808 KB Output is correct
19 Correct 5 ms 2680 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct

Subtask #2
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 349 ms 26996 KB Output is correct
2 Correct 447 ms 36688 KB Output is correct
3 Correct 200 ms 15212 KB Output is correct
4 Correct 447 ms 35308 KB Output is correct
5 Correct 430 ms 47668 KB Output is correct
6 Correct 13 ms 3832 KB Output is correct
7 Correct 299 ms 24952 KB Output is correct
8 Correct 384 ms 27416 KB Output is correct
9 Correct 293 ms 24868 KB Output is correct
10 Correct 222 ms 18948 KB Output is correct
11 Correct 32 ms 5052 KB Output is correct
12 Correct 222 ms 23316 KB Output is correct
13 Correct 175 ms 25316 KB Output is correct
14 Correct 297 ms 24776 KB Output is correct
15 Correct 11 ms 3320 KB Output is correct
16 Correct 496 ms 35684 KB Output is correct
17 Correct 28 ms 4728 KB Output is correct
18 Correct 30 ms 5112 KB Output is correct
19 Correct 107 ms 12024 KB Output is correct
20 Correct 33 ms 5368 KB Output is correct

Subtask #3
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2680 KB Output is correct
2 Correct 7 ms 2936 KB Output is correct
3 Correct 11 ms 2936 KB Output is correct
4 Correct 6 ms 2808 KB Output is correct
5 Correct 7 ms 2808 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 7 ms 2936 KB Output is correct
9 Correct 7 ms 2936 KB Output is correct
10 Correct 7 ms 2936 KB Output is correct
11 Correct 5 ms 2680 KB Output is correct
12 Correct 8 ms 2940 KB Output is correct
13 Correct 8 ms 2936 KB Output is correct
14 Correct 5 ms 2808 KB Output is correct
15 Correct 6 ms 2936 KB Output is correct
16 Correct 5 ms 2808 KB Output is correct
17 Correct 5 ms 2680 KB Output is correct
18 Correct 5 ms 2808 KB Output is correct
19 Correct 5 ms 2680 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct
21 Correct 349 ms 26996 KB Output is correct
22 Correct 447 ms 36688 KB Output is correct
23 Correct 200 ms 15212 KB Output is correct
24 Correct 447 ms 35308 KB Output is correct
25 Correct 430 ms 47668 KB Output is correct
26 Correct 13 ms 3832 KB Output is correct
27 Correct 299 ms 24952 KB Output is correct
28 Correct 384 ms 27416 KB Output is correct
29 Correct 293 ms 24868 KB Output is correct
30 Correct 222 ms 18948 KB Output is correct
31 Correct 32 ms 5052 KB Output is correct
32 Correct 222 ms 23316 KB Output is correct
33 Correct 175 ms 25316 KB Output is correct
34 Correct 297 ms 24776 KB Output is correct
35 Correct 11 ms 3320 KB Output is correct
36 Correct 496 ms 35684 KB Output is correct
37 Correct 28 ms 4728 KB Output is correct
38 Correct 30 ms 5112 KB Output is correct
39 Correct 107 ms 12024 KB Output is correct
40 Correct 33 ms 5368 KB Output is correct
41 Correct 252 ms 24092 KB Output is correct
42 Correct 46 ms 6692 KB Output is correct
43 Correct 238 ms 20988 KB Output is correct
44 Incorrect 153 ms 12400 KB Output isn't correct
45 Halted 0 ms 0 KB -