oj.uz

Submission #205775

# Submission time Handle Problem Language Result Execution time Memory
205775 2020-02-29T20:43:12 Z ly20 Toll (BOI17_toll) C++17
10 / 100
 136 ms 31480 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 512345;
const long long INF = 1123456789012;
long long v[MAXN];
vector <int> grafo[MAXN];
vector <long long> peso[MAXN];
long long dist[MAXN];
int grau[MAXN];
int main() {
	int k, n, m, o;
	scanf("%d %d %d %d", &k, &n, &m, &o);
	for(int i = 0; i < m; i++) {
		int a, b;
		long long p;
		scanf("%d %d", &a, &b);
		grau[b]++;
		scanf("%lld", &p);
		grafo[a].push_back(b);
		peso[a].push_back(p);
	}
	for(int i = 0; i < n; i++) dist[i] = INF;
	dist[0] = 0LL;
	queue <int> fila;
	for(int i = 0; i < n; i++) if(grau[i] == 0) fila.push(i);
	while(!fila.empty()) {
		int cur = fila.front();
		fila.pop();
		for(int i = 0; i < grafo[cur].size(); i++) {
			int viz = grafo[cur][i];
			long long p = peso[cur][i];
			dist[viz] = min(dist[viz], dist[cur] + p);
			grau[viz]--;
			if(grau[viz] == 0) fila.push(viz);
		}
	}
	for(int i = 0; i < o; i++) {
		int a, b;
		scanf("%d %d", &a, &b);
		if(dist[b] >= INF) printf("-1\n");
		else printf("%lld\n", dist[b]);
	}
	return 0;
}

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < grafo[cur].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~~~
toll.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d %d", &k, &n, &m, &o);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~
toll.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &p);
   ~~~~~^~~~~~~~~~~~
toll.cpp:39:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 63 ms 28152 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 28152 KB Output is correct
2 Correct 21 ms 24440 KB Output is correct
3 Correct 21 ms 24440 KB Output is correct
4 Correct 20 ms 24440 KB Output is correct
5 Correct 20 ms 24444 KB Output is correct
6 Correct 20 ms 24440 KB Output is correct
7 Correct 25 ms 24568 KB Output is correct
8 Correct 26 ms 24572 KB Output is correct
9 Correct 63 ms 29048 KB Output is correct
10 Correct 129 ms 31480 KB Output is correct
11 Correct 105 ms 30072 KB Output is correct
12 Correct 91 ms 29176 KB Output is correct
13 Correct 136 ms 31352 KB Output is correct
14 Correct 84 ms 29084 KB Output is correct
15 Correct 78 ms 28152 KB Output is correct
16 Correct 78 ms 28408 KB Output is correct

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 21 ms 24440 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 21 ms 24440 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Incorrect 63 ms 28152 KB Output isn't correct
2 Halted 0 ms 0 KB -