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Submission #1000748

# Submission time Handle Problem Language Result Execution time Memory
1000748 2024-06-18T08:14:47 Z Nomio Race (IOI11_race) C++17
9 / 100
 38 ms 15832 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
vector<int> adj[1001];
ll dis[1001][1001] {};
int d[1001][1001], D[1001][1001];
void bfs(int x) {
	queue<int> q;
	dis[x][x] = 0;
	D[x][x] = 0;
	q.push(x);
	while(!q.empty()) {
		int X = q.front();
		q.pop();
		for(int y : adj[X]) {
			if(dis[x][y] == -1) {
				q.push(y);
				dis[x][y] = dis[x][X] + d[X][y];
				D[x][y] = D[x][X] + 1;
			}
		}
	}
}
int best_path(int n, int k, int H[][2], int L[]) {
	for(int i = 0; i <= n; i++) {
		adj[i].clear();
	}
	for(int i = 0; i <= n; i++) {
		for(int j = 0; j <= n; j++) {
			D[i][j] = 0;
			d[i][j] = -1;
			if(i == j) {
				d[i][j] = 0;
			}
		}
	}
	for(int i = 0; i < n - 1; i++) {
		int a, b;
		a = H[i][0];
		b = H[i][1];
		adj[a].push_back(b);
		adj[b].push_back(a);
	}
	for(int i = 0; i < n - 1; i++) {
		d[H[i][0]][H[i][1]] = L[i];
		d[H[i][1]][H[i][0]] = L[i];
	}
	if(n <= 100 && k <= 100) {
		int S[n + 1] {};
		for(int i = 0; i < n - 1; i++) {
			S[i + 2] = S[i + 1] + L[i];
		}
		int mn = n;
		for(int i = 2; i <= n; i++) {
			for(int j = 1; j <= i - 1; j++) {
				if(S[i] - S[j] == k) {
					mn = min(mn, i - j);
				}
			}
		}
		if(mn == n) mn = -1; 
		return mn;
	} else {
		for(int i = 0; i < n; i++) {
			for(int j = 0; j < n; j++) {
				if(i == j) continue;
				bfs(i);
			}
		}
		int mn = 1e9;
		for(int i = 0; i < n; i++) {
			for(int j = 0; j < n; j++) {
				if(i == j) continue;
				if(dis[i][j] == k) {
					mn = min(mn, D[i][j]);
				}
			}
		}
		if(mn == 1e9) mn = -1;
		return mn;
	}
}
//int main() {
//	cout << best_path(3, 3, {{0, 1}, {1, 2}}, {1, 1}) << '\n';
//	return 0;
//}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Incorrect 38 ms 15832 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Runtime error 20 ms 13404 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Incorrect 38 ms 15832 KB Output isn't correct
22 Halted 0 ms 0 KB -