| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 36933 |
2017-12-19T08:31:38 Z |
szawinis |
Race (IOI11_race) |
C++14 |
|
2177 ms |
47808 KB |
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 1, K = 1e6 + 1;
int n, k, sz[N];
vector<pair<int, int>> g[N];
bool block[N];
void init(int u, int par) {
sz[u] = 1;
for(auto p: g[u]) if(p.first != par && !block[p.first]) {
init(p.first, u);
sz[u] += sz[p.first];
}
}
void dfs(int u, int par, int sum, int depth, map<int, int>& store) {
// cout << u << ' ' << par << endl;
for(auto p: g[u]) if(p.first != par && !block[p.first]) {
// cout << u << ' ' << p.first << ' ' << sum + p.second << ' ' << depth + 1 << endl;
if(!store.count(sum + p.second)) store[sum + p.second] = depth + 1;
else store[sum + p.second] = min(depth + 1, store[sum + p.second]);
dfs(p.first, u, sum + p.second, depth + 1, store);
}
}
int solve(int src) {
init(src, -1);
int cen = src;
while(true) {
bool found = false;
for(auto p: g[cen]) {
if(sz[p.first] < sz[cen] && sz[p.first] << 1 >= sz[src]) { // second condition guarantees no block
cen = p.first;
found = true;
break;
}
}
if(!found) break;
}
block[cen] = true;
int ans = INT_MAX;
map<int, int> f;
f[0] = 0;
for(auto p: g[cen]) if(!block[p.first]) {
map<int, int> tmp;
tmp[p.second] = 1;
dfs(p.first, -1, p.second, 1, tmp); // depth starts out at 1
for(auto mpp: tmp)
if(f.count(k - mpp.first))
ans = min(f[k - mpp.first] + mpp.second, ans);
for(auto mpp: tmp) {
if(!f.count(mpp.first)) f.insert(mpp);
else f[mpp.first] = min(mpp.second, f[mpp.first]);
}
}
// cout << cen << ":\n";
// for(auto p: f) cout << p.first << ' ' << p.second << endl;
// cout << endl;
for(auto p: g[cen]) if(!block[p.first]) ans = min(solve(p.first), ans);
return ans;
}
int best_path(int _n, int _k, int H[][2], int L[]) {
n = _n, k = _k;
for (int i = 0; i < n-1; i++) {
g[H[i][0]].emplace_back(H[i][1], L[i]);
g[H[i][1]].emplace_back(H[i][0], L[i]);
}
int res = solve(0);
return (res == INT_MAX ? -1 : res);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 6 |
Correct |
5 ms |
5344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 8 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
5344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 6 |
Correct |
5 ms |
5344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 8 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 20 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 21 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 22 |
Correct |
9 ms |
5348 KB |
Output is correct |
| 23 |
Correct |
8 ms |
5348 KB |
Output is correct |
| 24 |
Correct |
9 ms |
5364 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5364 KB |
Output is correct |
| 26 |
Correct |
8 ms |
5364 KB |
Output is correct |
| 27 |
Correct |
6 ms |
5364 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5480 KB |
Output is correct |
| 29 |
Correct |
8 ms |
5480 KB |
Output is correct |
| 30 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 31 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 32 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 34 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 35 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 36 |
Correct |
7 ms |
5484 KB |
Output is correct |
| 37 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 38 |
Correct |
8 ms |
5484 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 6 |
Correct |
5 ms |
5344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 8 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 19 |
Correct |
377 ms |
10764 KB |
Output is correct |
| 20 |
Correct |
350 ms |
10764 KB |
Output is correct |
| 21 |
Correct |
324 ms |
10876 KB |
Output is correct |
| 22 |
Correct |
284 ms |
10876 KB |
Output is correct |
| 23 |
Correct |
517 ms |
11388 KB |
Output is correct |
| 24 |
Correct |
228 ms |
11388 KB |
Output is correct |
| 25 |
Correct |
328 ms |
17788 KB |
Output is correct |
| 26 |
Correct |
152 ms |
17788 KB |
Output is correct |
| 27 |
Correct |
503 ms |
17788 KB |
Output is correct |
| 28 |
Correct |
1736 ms |
47808 KB |
Output is correct |
| 29 |
Correct |
1845 ms |
47808 KB |
Output is correct |
| 30 |
Correct |
473 ms |
47808 KB |
Output is correct |
| 31 |
Correct |
495 ms |
47808 KB |
Output is correct |
| 32 |
Correct |
604 ms |
47808 KB |
Output is correct |
| 33 |
Correct |
1000 ms |
47808 KB |
Output is correct |
| 34 |
Correct |
2091 ms |
47808 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5224 KB |
Output is correct |
| 6 |
Correct |
5 ms |
5344 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 8 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 15 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 17 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 18 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5344 KB |
Output is correct |
| 20 |
Correct |
7 ms |
5344 KB |
Output is correct |
| 21 |
Correct |
8 ms |
5344 KB |
Output is correct |
| 22 |
Correct |
9 ms |
5348 KB |
Output is correct |
| 23 |
Correct |
8 ms |
5348 KB |
Output is correct |
| 24 |
Correct |
9 ms |
5364 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5364 KB |
Output is correct |
| 26 |
Correct |
8 ms |
5364 KB |
Output is correct |
| 27 |
Correct |
6 ms |
5364 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5480 KB |
Output is correct |
| 29 |
Correct |
8 ms |
5480 KB |
Output is correct |
| 30 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 31 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 32 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5484 KB |
Output is correct |
| 34 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 35 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 36 |
Correct |
7 ms |
5484 KB |
Output is correct |
| 37 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 38 |
Correct |
8 ms |
5484 KB |
Output is correct |
| 39 |
Correct |
377 ms |
10764 KB |
Output is correct |
| 40 |
Correct |
350 ms |
10764 KB |
Output is correct |
| 41 |
Correct |
324 ms |
10876 KB |
Output is correct |
| 42 |
Correct |
284 ms |
10876 KB |
Output is correct |
| 43 |
Correct |
517 ms |
11388 KB |
Output is correct |
| 44 |
Correct |
228 ms |
11388 KB |
Output is correct |
| 45 |
Correct |
328 ms |
17788 KB |
Output is correct |
| 46 |
Correct |
152 ms |
17788 KB |
Output is correct |
| 47 |
Correct |
503 ms |
17788 KB |
Output is correct |
| 48 |
Correct |
1736 ms |
47808 KB |
Output is correct |
| 49 |
Correct |
1845 ms |
47808 KB |
Output is correct |
| 50 |
Correct |
473 ms |
47808 KB |
Output is correct |
| 51 |
Correct |
495 ms |
47808 KB |
Output is correct |
| 52 |
Correct |
604 ms |
47808 KB |
Output is correct |
| 53 |
Correct |
1000 ms |
47808 KB |
Output is correct |
| 54 |
Correct |
2091 ms |
47808 KB |
Output is correct |
| 55 |
Correct |
49 ms |
47808 KB |
Output is correct |
| 56 |
Correct |
29 ms |
47808 KB |
Output is correct |
| 57 |
Correct |
220 ms |
47808 KB |
Output is correct |
| 58 |
Correct |
76 ms |
47808 KB |
Output is correct |
| 59 |
Correct |
646 ms |
47808 KB |
Output is correct |
| 60 |
Correct |
2117 ms |
47808 KB |
Output is correct |
| 61 |
Correct |
659 ms |
47808 KB |
Output is correct |
| 62 |
Correct |
537 ms |
47808 KB |
Output is correct |
| 63 |
Correct |
655 ms |
47808 KB |
Output is correct |
| 64 |
Correct |
2101 ms |
47808 KB |
Output is correct |
| 65 |
Correct |
1743 ms |
47808 KB |
Output is correct |
| 66 |
Correct |
2177 ms |
47808 KB |
Output is correct |
| 67 |
Correct |
261 ms |
47808 KB |
Output is correct |
| 68 |
Correct |
895 ms |
47808 KB |
Output is correct |
| 69 |
Correct |
917 ms |
47808 KB |
Output is correct |
| 70 |
Correct |
890 ms |
47808 KB |
Output is correct |
