| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 62444 |
2018-07-28T13:23:09 Z |
Sherazin |
Race (IOI11_race) |
C++14 |
|
1228 ms |
77736 KB |
//#include "race.h"
#include <bits/stdc++.h>
#define pii pair<int, int>
#define x first
#define y second
using namespace std;
const int N = 2e5 + 5;
const int M = 1e6 + 5;
int n, k, book;
int ans = -1;
int sub[N], dp[M], tim[M];
vector<pii> g[N];
bitset<N> chk;
int cent, mxnode;
int calcsz(int u, int p) {
sub[u] = 1;
for(pii v : g[u]) if(v.x != p && !chk[v.x]) sub[u] += calcsz(v.x, u);
return sub[u];
}
void centroid(int u, int p, int all) {
int mxsub = all - sub[u];
for(pii v : g[u]) if(v.x != p && !chk[v.x]) {
centroid(v.x, u, all);
mxsub = max(mxsub, sub[v.x]);
}
if(mxsub < mxnode) cent = u, mxnode = mxsub;
}
void dfs(int u, int p, int len, int cnt) {
if(len > k) return;
if(tim[k - len] == book && (ans == -1 || cnt + dp[k - len] < ans)) ans = cnt + dp[k - len];
if(len == k && (ans == -1 || cnt < ans)) ans = cnt;
for(pii v : g[u]) if(v.x != p && !chk[v.x]) dfs(v.x, u, len + v.y, cnt + 1);
}
void prep(int u, int p, int len, int cnt) {
if(len > k) return;
if(tim[len] < book || cnt < dp[len]) tim[len] = book, dp[len] = cnt;
for(pii v : g[u]) if(v.x != p && !chk[v.x]) dfs(v.x, u, len + v.y, cnt + 1);
}
void dfs2(int u, int p, int cost, int edge, bool fill) {
if(cost > k) return;
if(!fill) {
if(tim[k - cost] == book && (edge + dp[k - cost] < ans || ans == -1)) ans = edge + dp[k - cost];
if(cost == k && (edge < ans || ans == -1)) ans = edge;
} else if(tim[cost] < book || edge < dp[cost]) tim[cost] = book, dp[cost] = edge;
for(pii v : g[u]) if(!chk[v.x] && v.x != p) {
dfs2(v.x, u, cost + v.y, edge + 1, fill);
}
}
void proc(int u) {
book++;
if(calcsz(u, u) <= 1) return;
mxnode = sub[u] + 1;
centroid(u, u, sub[u]);
u = cent;
//printf("%d\n", u);
for(pii v : g[u]) if(!chk[v.x]) {
dfs2(v.x, u, v.y, 1, false);
dfs2(v.x, u, v.y, 1, true);
}
chk[u] = 1;
for(pii v : g[u]) if(!chk[v.x]) proc(v.x);
}
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]);
}
proc(0);
return ans;
}
/*int main() {
int n, k, h[100][2], l[100];
scanf("%d%d", &n, &k);
for(int i = 0; i < n - 1; i++) {
scanf("%d %d %d", &h[i][0], &h[i][1], &l[i]);
}
printf("%d", best_path(n, k, h, l));
return 0;
}*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4856 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
5064 KB |
Output is correct |
| 4 |
Correct |
9 ms |
5064 KB |
Output is correct |
| 5 |
Correct |
8 ms |
5148 KB |
Output is correct |
| 6 |
Correct |
7 ms |
5148 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5232 KB |
Output is correct |
| 8 |
Correct |
8 ms |
5288 KB |
Output is correct |
| 9 |
Correct |
9 ms |
5288 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5296 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5300 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 13 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5316 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5316 KB |
Output is correct |
| 16 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 17 |
Correct |
9 ms |
5328 KB |
Output is correct |
| 18 |
Correct |
10 ms |
5328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4856 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
5064 KB |
Output is correct |
| 4 |
Correct |
9 ms |
5064 KB |
Output is correct |
| 5 |
Correct |
8 ms |
5148 KB |
Output is correct |
| 6 |
Correct |
7 ms |
5148 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5232 KB |
Output is correct |
| 8 |
Correct |
8 ms |
5288 KB |
Output is correct |
| 9 |
Correct |
9 ms |
5288 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5296 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5300 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 13 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5316 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5316 KB |
Output is correct |
| 16 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 17 |
Correct |
9 ms |
5328 KB |
Output is correct |
| 18 |
Correct |
10 ms |
5328 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5328 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5328 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5344 KB |
Output is correct |
| 22 |
Correct |
13 ms |
10348 KB |
Output is correct |
| 23 |
Correct |
15 ms |
10348 KB |
Output is correct |
| 24 |
Correct |
18 ms |
11096 KB |
Output is correct |
| 25 |
Correct |
16 ms |
11096 KB |
Output is correct |
| 26 |
Correct |
13 ms |
11096 KB |
Output is correct |
| 27 |
Correct |
10 ms |
11096 KB |
Output is correct |
| 28 |
Correct |
11 ms |
11096 KB |
Output is correct |
| 29 |
Correct |
12 ms |
11096 KB |
Output is correct |
| 30 |
Correct |
15 ms |
11096 KB |
Output is correct |
| 31 |
Correct |
13 ms |
11096 KB |
Output is correct |
| 32 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 33 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 34 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 35 |
Correct |
14 ms |
11476 KB |
Output is correct |
| 36 |
Correct |
17 ms |
12096 KB |
Output is correct |
| 37 |
Correct |
13 ms |
12096 KB |
Output is correct |
| 38 |
Correct |
10 ms |
12096 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4856 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
5064 KB |
Output is correct |
| 4 |
Correct |
9 ms |
5064 KB |
Output is correct |
| 5 |
Correct |
8 ms |
5148 KB |
Output is correct |
| 6 |
Correct |
7 ms |
5148 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5232 KB |
Output is correct |
| 8 |
Correct |
8 ms |
5288 KB |
Output is correct |
| 9 |
Correct |
9 ms |
5288 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5296 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5300 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 13 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5316 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5316 KB |
Output is correct |
| 16 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 17 |
Correct |
9 ms |
5328 KB |
Output is correct |
| 18 |
Correct |
10 ms |
5328 KB |
Output is correct |
| 19 |
Correct |
343 ms |
12328 KB |
Output is correct |
| 20 |
Correct |
343 ms |
13644 KB |
Output is correct |
| 21 |
Correct |
311 ms |
14996 KB |
Output is correct |
| 22 |
Correct |
451 ms |
16348 KB |
Output is correct |
| 23 |
Correct |
263 ms |
18044 KB |
Output is correct |
| 24 |
Correct |
141 ms |
19296 KB |
Output is correct |
| 25 |
Correct |
305 ms |
24188 KB |
Output is correct |
| 26 |
Correct |
171 ms |
29068 KB |
Output is correct |
| 27 |
Correct |
344 ms |
30340 KB |
Output is correct |
| 28 |
Correct |
776 ms |
47704 KB |
Output is correct |
| 29 |
Correct |
835 ms |
49620 KB |
Output is correct |
| 30 |
Correct |
330 ms |
49620 KB |
Output is correct |
| 31 |
Correct |
354 ms |
49620 KB |
Output is correct |
| 32 |
Correct |
402 ms |
49620 KB |
Output is correct |
| 33 |
Correct |
760 ms |
49620 KB |
Output is correct |
| 34 |
Correct |
654 ms |
50920 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4856 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
5064 KB |
Output is correct |
| 4 |
Correct |
9 ms |
5064 KB |
Output is correct |
| 5 |
Correct |
8 ms |
5148 KB |
Output is correct |
| 6 |
Correct |
7 ms |
5148 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5232 KB |
Output is correct |
| 8 |
Correct |
8 ms |
5288 KB |
Output is correct |
| 9 |
Correct |
9 ms |
5288 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5296 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5300 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 13 |
Correct |
7 ms |
5304 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5316 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5316 KB |
Output is correct |
| 16 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 17 |
Correct |
9 ms |
5328 KB |
Output is correct |
| 18 |
Correct |
10 ms |
5328 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5328 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5328 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5344 KB |
Output is correct |
| 22 |
Correct |
13 ms |
10348 KB |
Output is correct |
| 23 |
Correct |
15 ms |
10348 KB |
Output is correct |
| 24 |
Correct |
18 ms |
11096 KB |
Output is correct |
| 25 |
Correct |
16 ms |
11096 KB |
Output is correct |
| 26 |
Correct |
13 ms |
11096 KB |
Output is correct |
| 27 |
Correct |
10 ms |
11096 KB |
Output is correct |
| 28 |
Correct |
11 ms |
11096 KB |
Output is correct |
| 29 |
Correct |
12 ms |
11096 KB |
Output is correct |
| 30 |
Correct |
15 ms |
11096 KB |
Output is correct |
| 31 |
Correct |
13 ms |
11096 KB |
Output is correct |
| 32 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 33 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 34 |
Correct |
14 ms |
11096 KB |
Output is correct |
| 35 |
Correct |
14 ms |
11476 KB |
Output is correct |
| 36 |
Correct |
17 ms |
12096 KB |
Output is correct |
| 37 |
Correct |
13 ms |
12096 KB |
Output is correct |
| 38 |
Correct |
10 ms |
12096 KB |
Output is correct |
| 39 |
Correct |
343 ms |
12328 KB |
Output is correct |
| 40 |
Correct |
343 ms |
13644 KB |
Output is correct |
| 41 |
Correct |
311 ms |
14996 KB |
Output is correct |
| 42 |
Correct |
451 ms |
16348 KB |
Output is correct |
| 43 |
Correct |
263 ms |
18044 KB |
Output is correct |
| 44 |
Correct |
141 ms |
19296 KB |
Output is correct |
| 45 |
Correct |
305 ms |
24188 KB |
Output is correct |
| 46 |
Correct |
171 ms |
29068 KB |
Output is correct |
| 47 |
Correct |
344 ms |
30340 KB |
Output is correct |
| 48 |
Correct |
776 ms |
47704 KB |
Output is correct |
| 49 |
Correct |
835 ms |
49620 KB |
Output is correct |
| 50 |
Correct |
330 ms |
49620 KB |
Output is correct |
| 51 |
Correct |
354 ms |
49620 KB |
Output is correct |
| 52 |
Correct |
402 ms |
49620 KB |
Output is correct |
| 53 |
Correct |
760 ms |
49620 KB |
Output is correct |
| 54 |
Correct |
654 ms |
50920 KB |
Output is correct |
| 55 |
Correct |
23 ms |
50920 KB |
Output is correct |
| 56 |
Correct |
24 ms |
50920 KB |
Output is correct |
| 57 |
Correct |
158 ms |
50920 KB |
Output is correct |
| 58 |
Correct |
55 ms |
50920 KB |
Output is correct |
| 59 |
Correct |
181 ms |
58680 KB |
Output is correct |
| 60 |
Correct |
1177 ms |
77360 KB |
Output is correct |
| 61 |
Correct |
340 ms |
77360 KB |
Output is correct |
| 62 |
Correct |
421 ms |
77360 KB |
Output is correct |
| 63 |
Correct |
541 ms |
77360 KB |
Output is correct |
| 64 |
Correct |
1228 ms |
77360 KB |
Output is correct |
| 65 |
Correct |
529 ms |
77360 KB |
Output is correct |
| 66 |
Correct |
1060 ms |
77736 KB |
Output is correct |
| 67 |
Correct |
217 ms |
77736 KB |
Output is correct |
| 68 |
Correct |
614 ms |
77736 KB |
Output is correct |
| 69 |
Correct |
542 ms |
77736 KB |
Output is correct |
| 70 |
Correct |
556 ms |
77736 KB |
Output is correct |
