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Submission #491378

# Submission time Handle Problem Language Result Execution time Memory
491378 2021-12-01T20:49:53 Z MohammadAghil Race (IOI11_race) C++14
100 / 100
 483 ms 139072 KB 
#include <bits/stdc++.h> 
// #include "race.h"
// #include <ext/pb_ds/assoc_container.hpp>
// using namespace __gnu_pbds;
// #pragma GCC optimize ("Ofast")
// #pragma GCC target ("avx,avx2")
using namespace std; 
typedef long long ll; 
typedef pair<ll, int> pp;
#define rep(i,l,r) for(int i = (l); i < r; i++)
#define per(i,r,l) for(int i = (r); i >= l; i--)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define pb push_back
#define ff first
#define ss second 

const ll mod = 998244353, maxn = 1e6 + 5, inf = 1e9 + 5;

bool ban[maxn];
int cnt[maxn], k;
vector<pp> adj[maxn], st[maxn];
int dist[maxn];

void set_cnt(int r, int p){
    cnt[r] = 1;
    for(pp c: adj[r]) if(c.ff != p && !ban[c.ff]){
        set_cnt(c.ff, r);
        cnt[r] += cnt[c.ff];
    }
}

int findCenteroid(int r, int p, int tot){
    for(pp c: adj[r]) if(c.ff != p && !ban[c.ff]){
        if(cnt[c.ff] >= tot - cnt[c.ff]) return findCenteroid(c.ff, r, tot);
    }
    return r;
}

void dfs(int r, int p, int rt, ll len, int w){
    st[rt].pb({len, w});
    for(pp c: adj[r]) if(c.ff != p && !ban[c.ff]) dfs(c.ff, r, rt, len + c.ss, w + 1);
}

int slv(int r){
    set_cnt(r, r);
    r = findCenteroid(r, r, cnt[r]);
    int ans = inf;
    for(pp c: adj[r]) if(!ban[c.ff]){
        dfs(c.ff, r, c.ff, c.ss, 1);
        for(pp t: st[c.ff]){
            int v = k - t.ff;
            if(v < 0 || (v > 0 && dist[v] == 0)) continue;
            ans = min(ans, dist[v] + t.ss);
        }
        for(pp t: st[c.ff]){
            if(t.ff > k) continue;
            if(dist[t.ff] == 0) dist[t.ff] = t.ss;
            dist[t.ff] = min(dist[t.ff], t.ss);
        }
    }
    for(pp c: adj[r]) if(!ban[c.ff]){
        for(pp t: st[c.ff]){
            if(t.ff > k) continue;
            dist[t.ff] = 0;
        }
        st[c.ff].clear();
    }
    ban[r] = true;
    for(pp c: adj[r]) if(!ban[c.ff]){
        ans = min(ans, slv(c.ff));
    }
    return ans;
}

int best_path(int N, int K, int H[][2], int L[]){
    k = K;
    rep(i,0,N-1){
        adj[H[i][0]].pb({H[i][1], L[i]});
        adj[H[i][1]].pb({H[i][0], L[i]});
    }
    int ans = slv(0);
    return ans == inf? -1: ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47308 KB Output is correct
2 Correct 22 ms 47312 KB Output is correct
3 Correct 22 ms 47316 KB Output is correct
4 Correct 22 ms 47268 KB Output is correct
5 Correct 22 ms 47248 KB Output is correct
6 Correct 21 ms 47216 KB Output is correct
7 Correct 24 ms 47212 KB Output is correct
8 Correct 23 ms 47268 KB Output is correct
9 Correct 22 ms 47196 KB Output is correct
10 Correct 24 ms 47300 KB Output is correct
11 Correct 23 ms 47208 KB Output is correct
12 Correct 22 ms 47220 KB Output is correct
13 Correct 23 ms 47308 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 22 ms 47320 KB Output is correct
16 Correct 23 ms 47296 KB Output is correct
17 Correct 22 ms 47292 KB Output is correct
18 Correct 23 ms 47208 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47308 KB Output is correct
2 Correct 22 ms 47312 KB Output is correct
3 Correct 22 ms 47316 KB Output is correct
4 Correct 22 ms 47268 KB Output is correct
5 Correct 22 ms 47248 KB Output is correct
6 Correct 21 ms 47216 KB Output is correct
7 Correct 24 ms 47212 KB Output is correct
8 Correct 23 ms 47268 KB Output is correct
9 Correct 22 ms 47196 KB Output is correct
10 Correct 24 ms 47300 KB Output is correct
11 Correct 23 ms 47208 KB Output is correct
12 Correct 22 ms 47220 KB Output is correct
13 Correct 23 ms 47308 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 22 ms 47320 KB Output is correct
16 Correct 23 ms 47296 KB Output is correct
17 Correct 22 ms 47292 KB Output is correct
18 Correct 23 ms 47208 KB Output is correct
19 Correct 21 ms 47180 KB Output is correct
20 Correct 23 ms 47304 KB Output is correct
21 Correct 24 ms 47436 KB Output is correct
22 Correct 29 ms 49876 KB Output is correct
23 Correct 29 ms 49612 KB Output is correct
24 Correct 25 ms 50248 KB Output is correct
25 Correct 25 ms 49140 KB Output is correct
26 Correct 25 ms 48768 KB Output is correct
27 Correct 24 ms 47424 KB Output is correct
28 Correct 25 ms 48204 KB Output is correct
29 Correct 25 ms 48728 KB Output is correct
30 Correct 24 ms 48856 KB Output is correct
31 Correct 25 ms 49220 KB Output is correct
32 Correct 25 ms 49204 KB Output is correct
33 Correct 25 ms 50044 KB Output is correct
34 Correct 24 ms 49700 KB Output is correct
35 Correct 26 ms 50384 KB Output is correct
36 Correct 25 ms 50672 KB Output is correct
37 Correct 25 ms 49376 KB Output is correct
38 Correct 26 ms 48564 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47308 KB Output is correct
2 Correct 22 ms 47312 KB Output is correct
3 Correct 22 ms 47316 KB Output is correct
4 Correct 22 ms 47268 KB Output is correct
5 Correct 22 ms 47248 KB Output is correct
6 Correct 21 ms 47216 KB Output is correct
7 Correct 24 ms 47212 KB Output is correct
8 Correct 23 ms 47268 KB Output is correct
9 Correct 22 ms 47196 KB Output is correct
10 Correct 24 ms 47300 KB Output is correct
11 Correct 23 ms 47208 KB Output is correct
12 Correct 22 ms 47220 KB Output is correct
13 Correct 23 ms 47308 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 22 ms 47320 KB Output is correct
16 Correct 23 ms 47296 KB Output is correct
17 Correct 22 ms 47292 KB Output is correct
18 Correct 23 ms 47208 KB Output is correct
19 Correct 192 ms 73644 KB Output is correct
20 Correct 169 ms 73440 KB Output is correct
21 Correct 177 ms 72940 KB Output is correct
22 Correct 161 ms 69344 KB Output is correct
23 Correct 151 ms 79668 KB Output is correct
24 Correct 117 ms 66456 KB Output is correct
25 Correct 199 ms 89280 KB Output is correct
26 Correct 136 ms 90004 KB Output is correct
27 Correct 214 ms 87372 KB Output is correct
28 Correct 479 ms 136404 KB Output is correct
29 Correct 446 ms 135524 KB Output is correct
30 Correct 236 ms 87336 KB Output is correct
31 Correct 259 ms 87344 KB Output is correct
32 Correct 309 ms 87324 KB Output is correct
33 Correct 320 ms 114688 KB Output is correct
34 Correct 343 ms 112924 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47308 KB Output is correct
2 Correct 22 ms 47312 KB Output is correct
3 Correct 22 ms 47316 KB Output is correct
4 Correct 22 ms 47268 KB Output is correct
5 Correct 22 ms 47248 KB Output is correct
6 Correct 21 ms 47216 KB Output is correct
7 Correct 24 ms 47212 KB Output is correct
8 Correct 23 ms 47268 KB Output is correct
9 Correct 22 ms 47196 KB Output is correct
10 Correct 24 ms 47300 KB Output is correct
11 Correct 23 ms 47208 KB Output is correct
12 Correct 22 ms 47220 KB Output is correct
13 Correct 23 ms 47308 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 22 ms 47320 KB Output is correct
16 Correct 23 ms 47296 KB Output is correct
17 Correct 22 ms 47292 KB Output is correct
18 Correct 23 ms 47208 KB Output is correct
19 Correct 21 ms 47180 KB Output is correct
20 Correct 23 ms 47304 KB Output is correct
21 Correct 24 ms 47436 KB Output is correct
22 Correct 29 ms 49876 KB Output is correct
23 Correct 29 ms 49612 KB Output is correct
24 Correct 25 ms 50248 KB Output is correct
25 Correct 25 ms 49140 KB Output is correct
26 Correct 25 ms 48768 KB Output is correct
27 Correct 24 ms 47424 KB Output is correct
28 Correct 25 ms 48204 KB Output is correct
29 Correct 25 ms 48728 KB Output is correct
30 Correct 24 ms 48856 KB Output is correct
31 Correct 25 ms 49220 KB Output is correct
32 Correct 25 ms 49204 KB Output is correct
33 Correct 25 ms 50044 KB Output is correct
34 Correct 24 ms 49700 KB Output is correct
35 Correct 26 ms 50384 KB Output is correct
36 Correct 25 ms 50672 KB Output is correct
37 Correct 25 ms 49376 KB Output is correct
38 Correct 26 ms 48564 KB Output is correct
39 Correct 192 ms 73644 KB Output is correct
40 Correct 169 ms 73440 KB Output is correct
41 Correct 177 ms 72940 KB Output is correct
42 Correct 161 ms 69344 KB Output is correct
43 Correct 151 ms 79668 KB Output is correct
44 Correct 117 ms 66456 KB Output is correct
45 Correct 199 ms 89280 KB Output is correct
46 Correct 136 ms 90004 KB Output is correct
47 Correct 214 ms 87372 KB Output is correct
48 Correct 479 ms 136404 KB Output is correct
49 Correct 446 ms 135524 KB Output is correct
50 Correct 236 ms 87336 KB Output is correct
51 Correct 259 ms 87344 KB Output is correct
52 Correct 309 ms 87324 KB Output is correct
53 Correct 320 ms 114688 KB Output is correct
54 Correct 343 ms 112924 KB Output is correct
55 Correct 32 ms 49160 KB Output is correct
56 Correct 33 ms 49484 KB Output is correct
57 Correct 121 ms 79576 KB Output is correct
58 Correct 59 ms 57816 KB Output is correct
59 Correct 133 ms 90344 KB Output is correct
60 Correct 483 ms 138256 KB Output is correct
61 Correct 224 ms 87500 KB Output is correct
62 Correct 211 ms 87216 KB Output is correct
63 Correct 307 ms 87200 KB Output is correct
64 Correct 442 ms 103960 KB Output is correct
65 Correct 385 ms 93564 KB Output is correct
66 Correct 466 ms 139072 KB Output is correct
67 Correct 163 ms 69544 KB Output is correct
68 Correct 295 ms 87632 KB Output is correct
69 Correct 299 ms 87424 KB Output is correct
70 Correct 280 ms 85456 KB Output is correct