oj.uz

Submission #917299

# Submission time Handle Problem Language Result Execution time Memory
917299 2024-01-27T16:45:09 Z Taxiradio Race (IOI11_race) C++14
100 / 100
 869 ms 35212 KB 
#include <bits/stdc++.h>
#include "race.h"
using namespace std;

int n , k; 

vector<vector<pair<int , int>>> g;
vector<int> s;
vector<bool> removed;
vector<int> cnt;
int mdis =0;
int ans = INT_MAX;
int sz;
void get_subtree_size(int p){
    removed[p] = true;
    s[p] = 1;
    for(auto [x , y]:g[p]){
        if(!removed[x]){
            get_subtree_size(x);
            s[p] += s[x];
        }
    }
    removed[p] = false;
}

int get_centroid(int p){
    removed[p] = true;
    int centroid = p;
    for(auto [x , y]:g[p]){
        if(!removed[x] && s[x] > sz / 2){
            centroid = get_centroid(x);
            break;
        }
    }
    removed[p] = false;
    return centroid;
}

void dfs1(int p , int dis , int citys)
{
    if(k >= dis){
        ans = min(cnt[k-dis]+citys , ans);
    }else return;
    mdis = max(mdis , dis);
    removed[p] = true;
    for(auto [x , y]:g[p]){
        if(!removed[x]){
            dfs1(x , dis+y , citys+1);
        }
    }
    removed[p] = false;
}

void dfs2(int p , int dis , int citys)
{
    if(dis <= k)cnt[dis] = min(cnt[dis] , citys);else return;
    removed[p] = true;
    for(auto [x , y]:g[p]){
        if(!removed[x]){
            dfs2(x , dis+y , citys+1);
        }
    }
    removed[p] = false;
}

void solve(int p){
    mdis = 0;
    cnt[0] = 0;
    get_subtree_size(p);
    sz = s[p];
    int centroid = get_centroid(p);
    removed[centroid] = true;
    for(auto [x , y]: g[centroid]){
        if(!removed[x]){
            dfs1(x, y , 1);
            dfs2(x, y , 1);
        }
    }
    for(int i = 1; i <= mdis; i++){
        cnt[i] = INT_MAX-n;
    }
    for(auto [x , y]: g[centroid]){
        if(!removed[x]){
            solve(x);
        }
    }
}
int best_path(int N ,int K, int H[][2], int L[]){
	n = N;
	k = K;
	g.resize(n);
	s.resize(n);
	removed.resize(n);
    cnt.resize(k+1 , INT_MAX-n);
    for(int i = 0; i < n-1; i++){
        g[H[i][0]].push_back({H[i][1] , L[i]});
        g[H[i][1]].push_back({H[i][0] , L[i]});
    }
    solve(0);
	if(ans < n)return ans; else return -1;
}

Compilation message

race.cpp: In function 'void get_subtree_size(int)':
race.cpp:17:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   17 |     for(auto [x , y]:g[p]){
      |              ^
race.cpp: In function 'int get_centroid(int)':
race.cpp:29:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |     for(auto [x , y]:g[p]){
      |              ^
race.cpp: In function 'void dfs1(int, int, int)':
race.cpp:46:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   46 |     for(auto [x , y]:g[p]){
      |              ^
race.cpp: In function 'void dfs2(int, int, int)':
race.cpp:58:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   58 |     for(auto [x , y]:g[p]){
      |              ^
race.cpp: In function 'void solve(int)':
race.cpp:73:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   73 |     for(auto [x , y]: g[centroid]){
      |              ^
race.cpp:82:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   82 |     for(auto [x , y]: g[centroid]){
      |              ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2548 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2548 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 152 ms 5984 KB Output is correct
23 Correct 106 ms 5508 KB Output is correct
24 Correct 130 ms 5724 KB Output is correct
25 Correct 21 ms 5724 KB Output is correct
26 Correct 50 ms 3872 KB Output is correct
27 Correct 2 ms 5464 KB Output is correct
28 Correct 17 ms 3160 KB Output is correct
29 Correct 18 ms 3672 KB Output is correct
30 Correct 18 ms 3932 KB Output is correct
31 Correct 20 ms 4956 KB Output is correct
32 Correct 20 ms 5352 KB Output is correct
33 Correct 25 ms 5464 KB Output is correct
34 Correct 31 ms 4696 KB Output is correct
35 Correct 33 ms 5720 KB Output is correct
36 Correct 31 ms 6228 KB Output is correct
37 Correct 6 ms 5468 KB Output is correct
38 Correct 5 ms 4444 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2548 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 82 ms 10900 KB Output is correct
20 Correct 81 ms 11092 KB Output is correct
21 Correct 84 ms 11100 KB Output is correct
22 Correct 78 ms 11108 KB Output is correct
23 Correct 62 ms 11356 KB Output is correct
24 Correct 50 ms 11112 KB Output is correct
25 Correct 91 ms 13648 KB Output is correct
26 Correct 73 ms 16728 KB Output is correct
27 Correct 103 ms 17748 KB Output is correct
28 Correct 173 ms 28756 KB Output is correct
29 Correct 177 ms 28036 KB Output is correct
30 Correct 101 ms 17700 KB Output is correct
31 Correct 107 ms 17884 KB Output is correct
32 Correct 145 ms 17512 KB Output is correct
33 Correct 129 ms 16464 KB Output is correct
34 Correct 112 ms 16464 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2548 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 152 ms 5984 KB Output is correct
23 Correct 106 ms 5508 KB Output is correct
24 Correct 130 ms 5724 KB Output is correct
25 Correct 21 ms 5724 KB Output is correct
26 Correct 50 ms 3872 KB Output is correct
27 Correct 2 ms 5464 KB Output is correct
28 Correct 17 ms 3160 KB Output is correct
29 Correct 18 ms 3672 KB Output is correct
30 Correct 18 ms 3932 KB Output is correct
31 Correct 20 ms 4956 KB Output is correct
32 Correct 20 ms 5352 KB Output is correct
33 Correct 25 ms 5464 KB Output is correct
34 Correct 31 ms 4696 KB Output is correct
35 Correct 33 ms 5720 KB Output is correct
36 Correct 31 ms 6228 KB Output is correct
37 Correct 6 ms 5468 KB Output is correct
38 Correct 5 ms 4444 KB Output is correct
39 Correct 82 ms 10900 KB Output is correct
40 Correct 81 ms 11092 KB Output is correct
41 Correct 84 ms 11100 KB Output is correct
42 Correct 78 ms 11108 KB Output is correct
43 Correct 62 ms 11356 KB Output is correct
44 Correct 50 ms 11112 KB Output is correct
45 Correct 91 ms 13648 KB Output is correct
46 Correct 73 ms 16728 KB Output is correct
47 Correct 103 ms 17748 KB Output is correct
48 Correct 173 ms 28756 KB Output is correct
49 Correct 177 ms 28036 KB Output is correct
50 Correct 101 ms 17700 KB Output is correct
51 Correct 107 ms 17884 KB Output is correct
52 Correct 145 ms 17512 KB Output is correct
53 Correct 129 ms 16464 KB Output is correct
54 Correct 112 ms 16464 KB Output is correct
55 Correct 10 ms 3160 KB Output is correct
56 Correct 9 ms 3164 KB Output is correct
57 Correct 57 ms 11356 KB Output is correct
58 Correct 28 ms 11208 KB Output is correct
59 Correct 76 ms 17500 KB Output is correct
60 Correct 262 ms 35212 KB Output is correct
61 Correct 124 ms 20684 KB Output is correct
62 Correct 127 ms 24400 KB Output is correct
63 Correct 152 ms 24532 KB Output is correct
64 Correct 869 ms 23016 KB Output is correct
65 Correct 198 ms 21580 KB Output is correct
66 Correct 542 ms 33136 KB Output is correct
67 Correct 72 ms 25284 KB Output is correct
68 Correct 382 ms 25172 KB Output is correct
69 Correct 332 ms 25424 KB Output is correct
70 Correct 275 ms 24656 KB Output is correct