oj.uz

답안 #946928

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
946928 2024-03-15T07:44:03 Z Esgeer 경주 (Race) (IOI11_race) C++17
100 / 100
 386 ms 105356 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <unistd.h>
using namespace __gnu_pbds;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#ifndef Local
    #pragma GCC optimize("O3,unroll-loops")
    #include "race.h"
#endif
#define int long long
#define vi vector<int>
#define vvi vector<vi>
#define pii pair<int, int>
#define vpi vector<pii>
#define vvpi vector<vpi>
#define vb vector<bool>
#define vvb vector<vb>
#define endl '\n'
#define sp << " " <<
#define F(i, s, n) for(int i = s; i < n; i++)
#define pb push_back
#define fi first
#define se second

 
int inf = 1e18;
const int N = 2e5+5;
int32_t l[N];
int32_t h[N][2];

vpi adj[N];
map<int, int> mp[N];
int k;

int ans = inf;
void dfs(int node, int par, int depth, int depl) {
    mp[node][depl] = depth;

    int totK = depl * 2 + k;
    for(pii go : adj[node]) if(go.fi != par) {
        dfs(go.fi, node, depth+1, depl+go.se);
        if(mp[go.fi].size() > mp[node].size()) swap(mp[go.fi], mp[node]);
        for(pii el : mp[go.fi]) {
            if(mp[node].find(totK - el.fi) != mp[node].end()) {
                ans = min(ans, mp[node][totK - el.fi] + el.se - depth*2);
            }
        }
        for(pii el : mp[go.fi]) {
            if(mp[node].find(el.fi) != mp[node].end()) mp[node][el.fi] = min(mp[node][el.fi], el.se);
            else mp[node][el.fi] = el.se;
        }
    }
}

int32_t best_path(int32_t n, int32_t k, int32_t h[][2], int32_t l[]) {
    F(i, 0, n-1) {
        int u = h[i][0], v = h[i][1];
        adj[u].pb({v, l[i]});
        adj[v].pb({u, l[i]});
    }

    ::k = k;
    dfs(0, -1, 0, 0);
    if(ans < 1e16) return ans;
    else return -1;
}

#ifdef Local
void solve() {
    int32_t n, k;
    cin >> n >> k;

    F(i, 0, n-1) cin >> h[i][0] >> h[i][1];
    F(i, 0, n-1) cin >> l[i];

    cout << best_path(n, k, h, l) << endl;
}
 
void setIO() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    #ifdef Local
        freopen("local.in", "r", stdin);
        freopen("local.out", "w", stdout);
    #else 
        // freopen("disrupt.in","r",stdin);
        // freopen("disrupt.out","w",stdout);
    #endif
}
signed main() {
    setIO();
    int t = 1;
    //cin >> t;
    while(t--) solve();
}
#endif

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 3 ms 18780 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18876 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18776 KB Output is correct
18 Correct 3 ms 18780 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 3 ms 18780 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18876 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18776 KB Output is correct
18 Correct 3 ms 18780 KB Output is correct
19 Correct 3 ms 18780 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 4 ms 19036 KB Output is correct
22 Correct 4 ms 19036 KB Output is correct
23 Correct 6 ms 19152 KB Output is correct
24 Correct 4 ms 19036 KB Output is correct
25 Correct 5 ms 19036 KB Output is correct
26 Correct 5 ms 19036 KB Output is correct
27 Correct 4 ms 19036 KB Output is correct
28 Correct 4 ms 19036 KB Output is correct
29 Correct 4 ms 19036 KB Output is correct
30 Correct 4 ms 19036 KB Output is correct
31 Correct 4 ms 19036 KB Output is correct
32 Correct 4 ms 19036 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 4 ms 19036 KB Output is correct
35 Correct 4 ms 19124 KB Output is correct
36 Correct 5 ms 19036 KB Output is correct
37 Correct 4 ms 19032 KB Output is correct
38 Correct 6 ms 19036 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 3 ms 18780 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18876 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18776 KB Output is correct
18 Correct 3 ms 18780 KB Output is correct
19 Correct 96 ms 41808 KB Output is correct
20 Correct 108 ms 41768 KB Output is correct
21 Correct 101 ms 41504 KB Output is correct
22 Correct 94 ms 40896 KB Output is correct
23 Correct 142 ms 53868 KB Output is correct
24 Correct 112 ms 43856 KB Output is correct
25 Correct 84 ms 43432 KB Output is correct
26 Correct 55 ms 52308 KB Output is correct
27 Correct 161 ms 50924 KB Output is correct
28 Correct 260 ms 96260 KB Output is correct
29 Correct 229 ms 94032 KB Output is correct
30 Correct 153 ms 50768 KB Output is correct
31 Correct 159 ms 51096 KB Output is correct
32 Correct 200 ms 50896 KB Output is correct
33 Correct 183 ms 55892 KB Output is correct
34 Correct 297 ms 87924 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 18776 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 3 ms 18780 KB Output is correct
4 Correct 3 ms 18780 KB Output is correct
5 Correct 3 ms 18780 KB Output is correct
6 Correct 3 ms 18780 KB Output is correct
7 Correct 4 ms 18876 KB Output is correct
8 Correct 3 ms 18780 KB Output is correct
9 Correct 3 ms 18780 KB Output is correct
10 Correct 4 ms 18780 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 5 ms 18780 KB Output is correct
13 Correct 3 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 3 ms 18780 KB Output is correct
17 Correct 3 ms 18776 KB Output is correct
18 Correct 3 ms 18780 KB Output is correct
19 Correct 3 ms 18780 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 4 ms 19036 KB Output is correct
22 Correct 4 ms 19036 KB Output is correct
23 Correct 6 ms 19152 KB Output is correct
24 Correct 4 ms 19036 KB Output is correct
25 Correct 5 ms 19036 KB Output is correct
26 Correct 5 ms 19036 KB Output is correct
27 Correct 4 ms 19036 KB Output is correct
28 Correct 4 ms 19036 KB Output is correct
29 Correct 4 ms 19036 KB Output is correct
30 Correct 4 ms 19036 KB Output is correct
31 Correct 4 ms 19036 KB Output is correct
32 Correct 4 ms 19036 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 4 ms 19036 KB Output is correct
35 Correct 4 ms 19124 KB Output is correct
36 Correct 5 ms 19036 KB Output is correct
37 Correct 4 ms 19032 KB Output is correct
38 Correct 6 ms 19036 KB Output is correct
39 Correct 96 ms 41808 KB Output is correct
40 Correct 108 ms 41768 KB Output is correct
41 Correct 101 ms 41504 KB Output is correct
42 Correct 94 ms 40896 KB Output is correct
43 Correct 142 ms 53868 KB Output is correct
44 Correct 112 ms 43856 KB Output is correct
45 Correct 84 ms 43432 KB Output is correct
46 Correct 55 ms 52308 KB Output is correct
47 Correct 161 ms 50924 KB Output is correct
48 Correct 260 ms 96260 KB Output is correct
49 Correct 229 ms 94032 KB Output is correct
50 Correct 153 ms 50768 KB Output is correct
51 Correct 159 ms 51096 KB Output is correct
52 Correct 200 ms 50896 KB Output is correct
53 Correct 183 ms 55892 KB Output is correct
54 Correct 297 ms 87924 KB Output is correct
55 Correct 15 ms 21848 KB Output is correct
56 Correct 12 ms 20976 KB Output is correct
57 Correct 58 ms 39248 KB Output is correct
58 Correct 44 ms 31940 KB Output is correct
59 Correct 74 ms 58580 KB Output is correct
60 Correct 217 ms 94696 KB Output is correct
61 Correct 190 ms 54356 KB Output is correct
62 Correct 153 ms 50892 KB Output is correct
63 Correct 220 ms 51028 KB Output is correct
64 Correct 386 ms 105356 KB Output is correct
65 Correct 370 ms 102932 KB Output is correct
66 Correct 239 ms 89172 KB Output is correct
67 Correct 167 ms 43244 KB Output is correct
68 Correct 283 ms 66692 KB Output is correct
69 Correct 317 ms 71468 KB Output is correct
70 Correct 309 ms 64636 KB Output is correct