oj.uz

답안 #757485

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
757485 2023-06-13T08:56:28 Z hafo 경주 (Race) (IOI11_race) C++14
100 / 100
 557 ms 99788 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define pa pair<int, int>
#define pall pair<ll, int>
#define fi first
#define se second
#define TASK "test"
#define Size(x) (int) x.size()
#define all(x) x.begin(), x.end()
using namespace std;

template<typename T1, typename T2> bool mini (T1 &a, T2 b) {if(a > b) a = b; else return 0; return 1;}
template<typename T1, typename T2> bool maxi (T1 &a, T2 b) {if(a < b) a = b; else return 0; return 1;}

const int MOD = 1e9 + 7;
const int LOG = 20;
const int maxn = 2e5 + 7;
const ll oo = 1e9 + 69;

int n, k, w[maxn], u, v, ed[maxn][2], dep[maxn], ans;
ll f[maxn];
vector<pa> g[maxn];
unordered_map<ll, int> mp[maxn];

void dfs(int u, int par) {
    for(auto e:g[u]) {
        int v = e.fi, w = e.se;
        if(v == par) continue;
        f[v] = f[u] + w;
        dep[v] = dep[u] + 1;
        dfs(v, u);
    }
}

void dfs2(int u, int par) {
    mp[u][f[u]] = dep[u];
    if(f[u] == k) mini(ans, dep[u]);
    for(auto e:g[u]) {
        int v = e.fi;
        if(v == par) continue;
        dfs2(v, u);
        if(Size(mp[u]) < Size(mp[v])) {
            swap(mp[u], mp[v]);
        }

        for(auto e:mp[v]) {
            ll rem = k + 2LL * f[u] - e.fi;
            if(mp[u].count(rem)) mini(ans, e.se + mp[u][rem] - 2 * dep[u]);
        }
        for(auto e:mp[v]) {
            if(!mp[u].count(e.fi)) mp[u][e.fi] = e.se;
            else mini(mp[u][e.fi], e.se);
        }
    }
}

int best_path(int n, int len, int ed[][2], int w[]) {
//    cin>>n>>k;
//    for(int i = 0; i < n - 1; i++) {
//        cin>>ed[i][0]>>ed[i][1];
//    }
    k = len;
    for(int i = 0; i < n - 1; i++) {
//        cin>>w[i];
        u = ed[i][0] + 1, v = ed[i][1] + 1;
        g[u].pb({v, w[i]});
        g[v].pb({u, w[i]});
    }

    ans = oo;
    dfs(1, 0);
    dfs2(1, 0);
    return (ans == oo ? -1:ans);
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15956 KB Output is correct
3 Correct 9 ms 15956 KB Output is correct
4 Correct 11 ms 15956 KB Output is correct
5 Correct 11 ms 15992 KB Output is correct
6 Correct 10 ms 15956 KB Output is correct
7 Correct 10 ms 15956 KB Output is correct
8 Correct 9 ms 15956 KB Output is correct
9 Correct 9 ms 15956 KB Output is correct
10 Correct 9 ms 15956 KB Output is correct
11 Correct 9 ms 15920 KB Output is correct
12 Correct 9 ms 15956 KB Output is correct
13 Correct 10 ms 15956 KB Output is correct
14 Correct 12 ms 16020 KB Output is correct
15 Correct 11 ms 15956 KB Output is correct
16 Correct 9 ms 15956 KB Output is correct
17 Correct 9 ms 16024 KB Output is correct
18 Correct 9 ms 15968 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15956 KB Output is correct
3 Correct 9 ms 15956 KB Output is correct
4 Correct 11 ms 15956 KB Output is correct
5 Correct 11 ms 15992 KB Output is correct
6 Correct 10 ms 15956 KB Output is correct
7 Correct 10 ms 15956 KB Output is correct
8 Correct 9 ms 15956 KB Output is correct
9 Correct 9 ms 15956 KB Output is correct
10 Correct 9 ms 15956 KB Output is correct
11 Correct 9 ms 15920 KB Output is correct
12 Correct 9 ms 15956 KB Output is correct
13 Correct 10 ms 15956 KB Output is correct
14 Correct 12 ms 16020 KB Output is correct
15 Correct 11 ms 15956 KB Output is correct
16 Correct 9 ms 15956 KB Output is correct
17 Correct 9 ms 16024 KB Output is correct
18 Correct 9 ms 15968 KB Output is correct
19 Correct 12 ms 15996 KB Output is correct
20 Correct 9 ms 15956 KB Output is correct
21 Correct 10 ms 16212 KB Output is correct
22 Correct 14 ms 16284 KB Output is correct
23 Correct 10 ms 16280 KB Output is correct
24 Correct 10 ms 16212 KB Output is correct
25 Correct 10 ms 16212 KB Output is correct
26 Correct 13 ms 16256 KB Output is correct
27 Correct 13 ms 16184 KB Output is correct
28 Correct 11 ms 16212 KB Output is correct
29 Correct 10 ms 16212 KB Output is correct
30 Correct 11 ms 16240 KB Output is correct
31 Correct 13 ms 16212 KB Output is correct
32 Correct 11 ms 16224 KB Output is correct
33 Correct 14 ms 16320 KB Output is correct
34 Correct 12 ms 16232 KB Output is correct
35 Correct 12 ms 16236 KB Output is correct
36 Correct 10 ms 16212 KB Output is correct
37 Correct 9 ms 16236 KB Output is correct
38 Correct 11 ms 16232 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15956 KB Output is correct
3 Correct 9 ms 15956 KB Output is correct
4 Correct 11 ms 15956 KB Output is correct
5 Correct 11 ms 15992 KB Output is correct
6 Correct 10 ms 15956 KB Output is correct
7 Correct 10 ms 15956 KB Output is correct
8 Correct 9 ms 15956 KB Output is correct
9 Correct 9 ms 15956 KB Output is correct
10 Correct 9 ms 15956 KB Output is correct
11 Correct 9 ms 15920 KB Output is correct
12 Correct 9 ms 15956 KB Output is correct
13 Correct 10 ms 15956 KB Output is correct
14 Correct 12 ms 16020 KB Output is correct
15 Correct 11 ms 15956 KB Output is correct
16 Correct 9 ms 15956 KB Output is correct
17 Correct 9 ms 16024 KB Output is correct
18 Correct 9 ms 15968 KB Output is correct
19 Correct 140 ms 41556 KB Output is correct
20 Correct 126 ms 42888 KB Output is correct
21 Correct 137 ms 42660 KB Output is correct
22 Correct 161 ms 42424 KB Output is correct
23 Correct 160 ms 50980 KB Output is correct
24 Correct 130 ms 44700 KB Output is correct
25 Correct 145 ms 45488 KB Output is correct
26 Correct 85 ms 52496 KB Output is correct
27 Correct 250 ms 63688 KB Output is correct
28 Correct 349 ms 98624 KB Output is correct
29 Correct 343 ms 97224 KB Output is correct
30 Correct 246 ms 63692 KB Output is correct
31 Correct 236 ms 63644 KB Output is correct
32 Correct 354 ms 63776 KB Output is correct
33 Correct 244 ms 66844 KB Output is correct
34 Correct 426 ms 89784 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 15956 KB Output is correct
2 Correct 8 ms 15956 KB Output is correct
3 Correct 9 ms 15956 KB Output is correct
4 Correct 11 ms 15956 KB Output is correct
5 Correct 11 ms 15992 KB Output is correct
6 Correct 10 ms 15956 KB Output is correct
7 Correct 10 ms 15956 KB Output is correct
8 Correct 9 ms 15956 KB Output is correct
9 Correct 9 ms 15956 KB Output is correct
10 Correct 9 ms 15956 KB Output is correct
11 Correct 9 ms 15920 KB Output is correct
12 Correct 9 ms 15956 KB Output is correct
13 Correct 10 ms 15956 KB Output is correct
14 Correct 12 ms 16020 KB Output is correct
15 Correct 11 ms 15956 KB Output is correct
16 Correct 9 ms 15956 KB Output is correct
17 Correct 9 ms 16024 KB Output is correct
18 Correct 9 ms 15968 KB Output is correct
19 Correct 12 ms 15996 KB Output is correct
20 Correct 9 ms 15956 KB Output is correct
21 Correct 10 ms 16212 KB Output is correct
22 Correct 14 ms 16284 KB Output is correct
23 Correct 10 ms 16280 KB Output is correct
24 Correct 10 ms 16212 KB Output is correct
25 Correct 10 ms 16212 KB Output is correct
26 Correct 13 ms 16256 KB Output is correct
27 Correct 13 ms 16184 KB Output is correct
28 Correct 11 ms 16212 KB Output is correct
29 Correct 10 ms 16212 KB Output is correct
30 Correct 11 ms 16240 KB Output is correct
31 Correct 13 ms 16212 KB Output is correct
32 Correct 11 ms 16224 KB Output is correct
33 Correct 14 ms 16320 KB Output is correct
34 Correct 12 ms 16232 KB Output is correct
35 Correct 12 ms 16236 KB Output is correct
36 Correct 10 ms 16212 KB Output is correct
37 Correct 9 ms 16236 KB Output is correct
38 Correct 11 ms 16232 KB Output is correct
39 Correct 140 ms 41556 KB Output is correct
40 Correct 126 ms 42888 KB Output is correct
41 Correct 137 ms 42660 KB Output is correct
42 Correct 161 ms 42424 KB Output is correct
43 Correct 160 ms 50980 KB Output is correct
44 Correct 130 ms 44700 KB Output is correct
45 Correct 145 ms 45488 KB Output is correct
46 Correct 85 ms 52496 KB Output is correct
47 Correct 250 ms 63688 KB Output is correct
48 Correct 349 ms 98624 KB Output is correct
49 Correct 343 ms 97224 KB Output is correct
50 Correct 246 ms 63692 KB Output is correct
51 Correct 236 ms 63644 KB Output is correct
52 Correct 354 ms 63776 KB Output is correct
53 Correct 244 ms 66844 KB Output is correct
54 Correct 426 ms 89784 KB Output is correct
55 Correct 24 ms 19276 KB Output is correct
56 Correct 19 ms 18336 KB Output is correct
57 Correct 89 ms 40968 KB Output is correct
58 Correct 63 ms 37352 KB Output is correct
59 Correct 91 ms 57184 KB Output is correct
60 Correct 334 ms 97628 KB Output is correct
61 Correct 258 ms 66100 KB Output is correct
62 Correct 210 ms 63592 KB Output is correct
63 Correct 328 ms 63720 KB Output is correct
64 Correct 483 ms 99788 KB Output is correct
65 Correct 557 ms 99084 KB Output is correct
66 Correct 345 ms 93664 KB Output is correct
67 Correct 220 ms 60224 KB Output is correct
68 Correct 460 ms 74744 KB Output is correct
69 Correct 471 ms 78240 KB Output is correct
70 Correct 411 ms 72216 KB Output is correct