oj.uz

Submission #51758

# Submission time Handle Problem Language Result Execution time Memory
51758 2018-06-21T03:29:43 Z model_code None (JOI14_ho_t4) C++17
100 / 100
 467 ms 30176 KB 
#include<cstdio>
#include<queue>
#include<vector>
#include<algorithm>
using namespace std;
const int MAXN = 100005;
const long long INF = 100001000010000100ll; // >> 10^9*10^5

int H[MAXN];
long long dist[MAXN];
vector<int> to[MAXN], cost[MAXN];

struct Dat{
	long long d;
	int v;
	Dat(long long d, int v):d(d),v(v){}
	bool operator<(const Dat& a)const{ return d < a.d;}
};

int main(){
	int N, M, X, A, B, T;
	scanf("%d%d%d",&N,&M,&X);
	
	for(int i = 1; i <= N; i++) scanf("%d",&H[i]);
	for(int i = 0; i < M; i++){
		scanf("%d%d%d",&A,&B,&T);
		to[A].push_back(B);
		cost[A].push_back(T);
		to[B].push_back(A);
		cost[B].push_back(T);
	}
	
	for(int i = 1; i <= N; i++) dist[i] = -INF;
	
	priority_queue<Dat> q;
	q.push(Dat(X,1));
	
	while(!q.empty()){
		Dat now = q.top(); q.pop();
		if(dist[now.v] != -INF) continue;
		dist[now.v] = now.d;
		for(int i = 0; i < to[now.v].size(); i++){
			int u = to[now.v][i], c = cost[now.v][i];
			if(c > H[now.v]) continue;
			q.push(Dat(min(now.d-c, (long long)H[u]), u));
		}
	}
	
	if(dist[N] == -INF) puts("-1");
	else printf("%lld\n",X+H[N]-dist[N]*2);
	
	return 0;
}

Compilation message

2014_ho_t4.cpp: In function 'int main()':
2014_ho_t4.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < to[now.v].size(); i++){
                  ~~^~~~~~~~~~~~~~~~~~
2014_ho_t4.cpp:22:7: 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:24:35: 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("%d",&H[i]);
                              ~~~~~^~~~~~~~~~~~
2014_ho_t4.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&A,&B,&T);
   ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Correct 7 ms 5220 KB Output is correct
3 Correct 7 ms 5272 KB Output is correct
4 Correct 6 ms 5272 KB Output is correct
5 Correct 6 ms 5272 KB Output is correct
6 Correct 5 ms 5272 KB Output is correct
7 Correct 6 ms 5272 KB Output is correct
8 Correct 10 ms 5476 KB Output is correct
9 Correct 7 ms 5476 KB Output is correct
10 Correct 9 ms 5476 KB Output is correct
11 Correct 5 ms 5476 KB Output is correct
12 Correct 7 ms 5476 KB Output is correct
13 Correct 8 ms 5484 KB Output is correct
14 Correct 6 ms 5484 KB Output is correct
15 Correct 7 ms 5484 KB Output is correct
16 Correct 6 ms 5484 KB Output is correct
17 Correct 5 ms 5484 KB Output is correct
18 Correct 5 ms 5484 KB Output is correct
19 Correct 7 ms 5484 KB Output is correct
20 Correct 6 ms 5484 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 419 ms 17724 KB Output is correct
2 Correct 370 ms 22108 KB Output is correct
3 Correct 231 ms 22108 KB Output is correct
4 Correct 402 ms 23096 KB Output is correct
5 Correct 352 ms 30176 KB Output is correct
6 Correct 13 ms 30176 KB Output is correct
7 Correct 338 ms 30176 KB Output is correct
8 Correct 402 ms 30176 KB Output is correct
9 Correct 318 ms 30176 KB Output is correct
10 Correct 252 ms 30176 KB Output is correct
11 Correct 32 ms 30176 KB Output is correct
12 Correct 213 ms 30176 KB Output is correct
13 Correct 114 ms 30176 KB Output is correct
14 Correct 369 ms 30176 KB Output is correct
15 Correct 12 ms 30176 KB Output is correct
16 Correct 290 ms 30176 KB Output is correct
17 Correct 34 ms 30176 KB Output is correct
18 Correct 41 ms 30176 KB Output is correct
19 Correct 138 ms 30176 KB Output is correct
20 Correct 44 ms 30176 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Correct 7 ms 5220 KB Output is correct
3 Correct 7 ms 5272 KB Output is correct
4 Correct 6 ms 5272 KB Output is correct
5 Correct 6 ms 5272 KB Output is correct
6 Correct 5 ms 5272 KB Output is correct
7 Correct 6 ms 5272 KB Output is correct
8 Correct 10 ms 5476 KB Output is correct
9 Correct 7 ms 5476 KB Output is correct
10 Correct 9 ms 5476 KB Output is correct
11 Correct 5 ms 5476 KB Output is correct
12 Correct 7 ms 5476 KB Output is correct
13 Correct 8 ms 5484 KB Output is correct
14 Correct 6 ms 5484 KB Output is correct
15 Correct 7 ms 5484 KB Output is correct
16 Correct 6 ms 5484 KB Output is correct
17 Correct 5 ms 5484 KB Output is correct
18 Correct 5 ms 5484 KB Output is correct
19 Correct 7 ms 5484 KB Output is correct
20 Correct 6 ms 5484 KB Output is correct
21 Correct 419 ms 17724 KB Output is correct
22 Correct 370 ms 22108 KB Output is correct
23 Correct 231 ms 22108 KB Output is correct
24 Correct 402 ms 23096 KB Output is correct
25 Correct 352 ms 30176 KB Output is correct
26 Correct 13 ms 30176 KB Output is correct
27 Correct 338 ms 30176 KB Output is correct
28 Correct 402 ms 30176 KB Output is correct
29 Correct 318 ms 30176 KB Output is correct
30 Correct 252 ms 30176 KB Output is correct
31 Correct 32 ms 30176 KB Output is correct
32 Correct 213 ms 30176 KB Output is correct
33 Correct 114 ms 30176 KB Output is correct
34 Correct 369 ms 30176 KB Output is correct
35 Correct 12 ms 30176 KB Output is correct
36 Correct 290 ms 30176 KB Output is correct
37 Correct 34 ms 30176 KB Output is correct
38 Correct 41 ms 30176 KB Output is correct
39 Correct 138 ms 30176 KB Output is correct
40 Correct 44 ms 30176 KB Output is correct
41 Correct 314 ms 30176 KB Output is correct
42 Correct 62 ms 30176 KB Output is correct
43 Correct 287 ms 30176 KB Output is correct
44 Correct 181 ms 30176 KB Output is correct
45 Correct 406 ms 30176 KB Output is correct
46 Correct 26 ms 30176 KB Output is correct
47 Correct 433 ms 30176 KB Output is correct
48 Correct 456 ms 30176 KB Output is correct
49 Correct 338 ms 30176 KB Output is correct
50 Correct 397 ms 30176 KB Output is correct
51 Correct 47 ms 30176 KB Output is correct
52 Correct 385 ms 30176 KB Output is correct
53 Correct 355 ms 30176 KB Output is correct
54 Correct 356 ms 30176 KB Output is correct
55 Correct 393 ms 30176 KB Output is correct
56 Correct 467 ms 30176 KB Output is correct
57 Correct 81 ms 30176 KB Output is correct
58 Correct 11 ms 30176 KB Output is correct
59 Correct 391 ms 30176 KB Output is correct
60 Correct 76 ms 30176 KB Output is correct