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답안 #153918

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153918 2019-09-17T13:31:37 Z mhy908 날다람쥐 (JOI14_ho_t4) C++14
50 / 100
 514 ms 47468 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>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 5 ms 2680 KB Output is correct
2 Correct 8 ms 2936 KB Output is correct
3 Correct 6 ms 2936 KB Output is correct
4 Correct 5 ms 2808 KB Output is correct
5 Correct 18 ms 2812 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 6 ms 2808 KB Output is correct
8 Correct 7 ms 2936 KB Output is correct
9 Correct 12 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 7 ms 2936 KB Output is correct
13 Correct 7 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 6 ms 2728 KB Output is correct
17 Correct 5 ms 2680 KB Output is correct
18 Correct 5 ms 2680 KB Output is correct
19 Correct 5 ms 2808 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 362 ms 24344 KB Output is correct
2 Correct 476 ms 35956 KB Output is correct
3 Correct 212 ms 15216 KB Output is correct
4 Correct 463 ms 35032 KB Output is correct
5 Correct 514 ms 47468 KB Output is correct
6 Correct 14 ms 3832 KB Output is correct
7 Correct 325 ms 23672 KB Output is correct
8 Correct 383 ms 26720 KB Output is correct
9 Correct 280 ms 22904 KB Output is correct
10 Correct 200 ms 18808 KB Output is correct
11 Correct 33 ms 5052 KB Output is correct
12 Correct 235 ms 23196 KB Output is correct
13 Correct 174 ms 25316 KB Output is correct
14 Correct 306 ms 23464 KB Output is correct
15 Correct 11 ms 3368 KB Output is correct
16 Correct 434 ms 35768 KB Output is correct
17 Correct 28 ms 4728 KB Output is correct
18 Correct 31 ms 5108 KB Output is correct
19 Correct 107 ms 12024 KB Output is correct
20 Correct 39 ms 5368 KB Output is correct

Subtask #3
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 8 ms 2936 KB Output is correct
3 Correct 6 ms 2936 KB Output is correct
4 Correct 5 ms 2808 KB Output is correct
5 Correct 18 ms 2812 KB Output is correct
6 Correct 5 ms 2680 KB Output is correct
7 Correct 6 ms 2808 KB Output is correct
8 Correct 7 ms 2936 KB Output is correct
9 Correct 12 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 7 ms 2936 KB Output is correct
13 Correct 7 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 6 ms 2728 KB Output is correct
17 Correct 5 ms 2680 KB Output is correct
18 Correct 5 ms 2680 KB Output is correct
19 Correct 5 ms 2808 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct
21 Correct 362 ms 24344 KB Output is correct
22 Correct 476 ms 35956 KB Output is correct
23 Correct 212 ms 15216 KB Output is correct
24 Correct 463 ms 35032 KB Output is correct
25 Correct 514 ms 47468 KB Output is correct
26 Correct 14 ms 3832 KB Output is correct
27 Correct 325 ms 23672 KB Output is correct
28 Correct 383 ms 26720 KB Output is correct
29 Correct 280 ms 22904 KB Output is correct
30 Correct 200 ms 18808 KB Output is correct
31 Correct 33 ms 5052 KB Output is correct
32 Correct 235 ms 23196 KB Output is correct
33 Correct 174 ms 25316 KB Output is correct
34 Correct 306 ms 23464 KB Output is correct
35 Correct 11 ms 3368 KB Output is correct
36 Correct 434 ms 35768 KB Output is correct
37 Correct 28 ms 4728 KB Output is correct
38 Correct 31 ms 5108 KB Output is correct
39 Correct 107 ms 12024 KB Output is correct
40 Correct 39 ms 5368 KB Output is correct
41 Correct 238 ms 21956 KB Output is correct
42 Correct 49 ms 6788 KB Output is correct
43 Correct 255 ms 21020 KB Output is correct
44 Incorrect 150 ms 12396 KB Output isn't correct
45 Halted 0 ms 0 KB -