#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include "race.h"
//#include "grader.cpp"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef pair<int, int> pi;
#define debug(x) cerr << #x << ": " << x << endl;
#define debug2(x, y) debug(x) debug(y);
#define repn(i, a, b) for(int i = (int)(a); i < (int)(b); i++)
#define rep(i, a) for(int i = 0; i < (int)(a); i++)
#define all(v) v.begin(), v.end()
#define mp make_pair
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define endl '\n'
template<class T> T gcd(T a, T b){ return ((b == 0) ? a : gcd(b, a % b)); }
int n, k;
vector<pi> g[200005];
int vis[200005];
int ans = 1e9;
void dfs(int cur, int sum, int cnt){
vis[cur] = 1;
if(sum > k) return;
if(sum == k){
ans = min(ans, cnt);
}
for(pi u : g[cur]) if(!vis[u.fi]){
dfs(u.fi, sum + u.se, cnt + 1);
}
}
int best_path(int N, int K, int h[][2], int l[]){
k = K;
n = N;
rep(i, n){
g[h[i][0]].pb({h[i][1], l[i]});
g[h[i][1]].pb({h[i][0], l[i]});
}
rep(i, n){
memset(vis, 0, sizeof(vis));
dfs(i, 0, 0);
}
return (ans == 1e9 ? -1 : ans);
}
/*
Things to look out for:
- Integer overflows
- Array bounds
- Special cases
Be careful!
*/
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 2 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 3 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 4 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 5 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 6 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 7 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 8 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 9 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 10 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 11 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 12 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 13 |
Correct |
11 ms |
5884 KB |
Output is correct |
| 14 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 15 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 16 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 17 |
Correct |
12 ms |
5860 KB |
Output is correct |
| 18 |
Correct |
12 ms |
5752 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 2 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 3 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 4 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 5 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 6 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 7 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 8 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 9 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 10 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 11 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 12 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 13 |
Correct |
11 ms |
5884 KB |
Output is correct |
| 14 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 15 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 16 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 17 |
Correct |
12 ms |
5860 KB |
Output is correct |
| 18 |
Correct |
12 ms |
5752 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5752 KB |
Output is correct |
| 20 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 21 |
Correct |
59 ms |
5880 KB |
Output is correct |
| 22 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 23 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 24 |
Correct |
52 ms |
5880 KB |
Output is correct |
| 25 |
Correct |
60 ms |
5880 KB |
Output is correct |
| 26 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 27 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 28 |
Correct |
53 ms |
5852 KB |
Output is correct |
| 29 |
Correct |
55 ms |
5912 KB |
Output is correct |
| 30 |
Correct |
56 ms |
5884 KB |
Output is correct |
| 31 |
Correct |
61 ms |
5880 KB |
Output is correct |
| 32 |
Correct |
60 ms |
5880 KB |
Output is correct |
| 33 |
Correct |
60 ms |
5912 KB |
Output is correct |
| 34 |
Correct |
45 ms |
5880 KB |
Output is correct |
| 35 |
Correct |
45 ms |
5880 KB |
Output is correct |
| 36 |
Correct |
41 ms |
5880 KB |
Output is correct |
| 37 |
Correct |
47 ms |
6008 KB |
Output is correct |
| 38 |
Correct |
53 ms |
5880 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 2 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 3 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 4 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 5 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 6 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 7 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 8 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 9 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 10 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 11 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 12 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 13 |
Correct |
11 ms |
5884 KB |
Output is correct |
| 14 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 15 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 16 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 17 |
Correct |
12 ms |
5860 KB |
Output is correct |
| 18 |
Correct |
12 ms |
5752 KB |
Output is correct |
| 19 |
Execution timed out |
3049 ms |
12024 KB |
Time limit exceeded |
| 20 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 2 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 3 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 4 |
Correct |
11 ms |
5852 KB |
Output is correct |
| 5 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 6 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 7 |
Correct |
12 ms |
5880 KB |
Output is correct |
| 8 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 9 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 10 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 11 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 12 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 13 |
Correct |
11 ms |
5884 KB |
Output is correct |
| 14 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 15 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 16 |
Correct |
11 ms |
5752 KB |
Output is correct |
| 17 |
Correct |
12 ms |
5860 KB |
Output is correct |
| 18 |
Correct |
12 ms |
5752 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5752 KB |
Output is correct |
| 20 |
Correct |
11 ms |
5880 KB |
Output is correct |
| 21 |
Correct |
59 ms |
5880 KB |
Output is correct |
| 22 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 23 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 24 |
Correct |
52 ms |
5880 KB |
Output is correct |
| 25 |
Correct |
60 ms |
5880 KB |
Output is correct |
| 26 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 27 |
Correct |
47 ms |
5880 KB |
Output is correct |
| 28 |
Correct |
53 ms |
5852 KB |
Output is correct |
| 29 |
Correct |
55 ms |
5912 KB |
Output is correct |
| 30 |
Correct |
56 ms |
5884 KB |
Output is correct |
| 31 |
Correct |
61 ms |
5880 KB |
Output is correct |
| 32 |
Correct |
60 ms |
5880 KB |
Output is correct |
| 33 |
Correct |
60 ms |
5912 KB |
Output is correct |
| 34 |
Correct |
45 ms |
5880 KB |
Output is correct |
| 35 |
Correct |
45 ms |
5880 KB |
Output is correct |
| 36 |
Correct |
41 ms |
5880 KB |
Output is correct |
| 37 |
Correct |
47 ms |
6008 KB |
Output is correct |
| 38 |
Correct |
53 ms |
5880 KB |
Output is correct |
| 39 |
Execution timed out |
3049 ms |
12024 KB |
Time limit exceeded |
| 40 |
Halted |
0 ms |
0 KB |
- |
