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Submission #864546

# Submission time Handle Problem Language Result Execution time Memory
864546 2023-10-23T07:44:40 Z iskhakkutbilim Toll (BOI17_toll) C++17
46 / 100
 3000 ms 6500 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int N = 5e4;
const int mod = 1e17;
vector< pair<int, int> > g[N];
int k, n, m, q;
main(){
   ios::sync_with_stdio(0);
   cin.tie(0); cout.tie(0);
	cin >> k >> n >> m >> q;
	vector<int> dis(n, mod);
	for(int i = 0;i < m; i++){
		int a, b, w; cin >> a >> b >> w;
		dis[b] = min(dis[b], w);
		g[a].push_back({b, w});
	}
	
	vector<pair<int, int> > Q;
	int z = 0;
	for(int i = 0;i < q; i++){
		int a, b; cin >> a >> b;
		z+= (a == 0);
		Q.push_back({a, b});
	}
	z = 0;
	if(z == q){
		for(auto [a, b] : Q){
			if(a == b){
				cout << 0 << '\n';
				continue;
			}
			if(dis[b] >= mod or a != 0) cout << "-1" << '\n';
			else cout << dis[b] << '\n';
		}
		
		
		return 0;
	}
	
	for(auto [a, b] : Q){
		if(a == b){
			cout << 0 << '\n';
			continue;
		}
		for(int i = 0;i < n; i++) dis[i] = mod;
		dis[a] = 0;
		for(int i = a; i < n; i++){
			for(auto [to, w] : g[i]){
				if(dis[to] > dis[i] + w){
					dis[to] = dis[i] + w;
				}
			}
		}
		if(dis[b] >= mod) cout << "-1\n";
		else cout << dis[b] << '\n';
	}
	return 0;
}

Compilation message

toll.cpp:12:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   12 | main(){
      | ^~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1426 ms 3908 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 3 ms 1628 KB Output is correct
7 Correct 3 ms 1704 KB Output is correct
8 Correct 1251 ms 3932 KB Output is correct
9 Correct 1211 ms 3832 KB Output is correct
10 Correct 538 ms 2396 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3067 ms 5108 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1432 KB Output is correct
5 Correct 1 ms 1880 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1700 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 26 ms 3520 KB Output is correct
11 Correct 58 ms 4444 KB Output is correct
12 Correct 85 ms 5724 KB Output is correct
13 Correct 92 ms 6380 KB Output is correct
14 Correct 85 ms 4944 KB Output is correct
15 Correct 61 ms 3672 KB Output is correct
16 Correct 56 ms 3776 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1432 KB Output is correct
5 Correct 1 ms 1880 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1700 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 26 ms 3520 KB Output is correct
11 Correct 58 ms 4444 KB Output is correct
12 Correct 85 ms 5724 KB Output is correct
13 Correct 92 ms 6380 KB Output is correct
14 Correct 85 ms 4944 KB Output is correct
15 Correct 61 ms 3672 KB Output is correct
16 Correct 56 ms 3776 KB Output is correct
17 Correct 1055 ms 4672 KB Output is correct
18 Correct 1 ms 1384 KB Output is correct
19 Correct 1 ms 1628 KB Output is correct
20 Correct 1 ms 1628 KB Output is correct
21 Correct 1 ms 1628 KB Output is correct
22 Correct 1 ms 1372 KB Output is correct
23 Correct 8 ms 1788 KB Output is correct
24 Correct 10 ms 1628 KB Output is correct
25 Correct 22 ms 1880 KB Output is correct
26 Correct 15 ms 1628 KB Output is correct
27 Correct 299 ms 3696 KB Output is correct
28 Correct 1740 ms 6332 KB Output is correct
29 Correct 1742 ms 6500 KB Output is correct
30 Correct 1281 ms 5300 KB Output is correct

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1426 ms 3908 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 3 ms 1628 KB Output is correct
7 Correct 3 ms 1704 KB Output is correct
8 Correct 1251 ms 3932 KB Output is correct
9 Correct 1211 ms 3832 KB Output is correct
10 Correct 538 ms 2396 KB Output is correct
11 Execution timed out 3067 ms 5108 KB Time limit exceeded
12 Halted 0 ms 0 KB -