oj.uz

답안 #699267

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
699267 2023-02-16T10:04:04 Z gagik_2007 경주 (Race) (IOI11_race) C++17
100 / 100
 1662 ms 74316 KB 
#include "race.h"
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <cmath>
#include <chrono>
#include <ctime>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <limits>
#include <iomanip>
#include <unordered_set>
#include <unordered_map>
#include <fstream>
#include <functional>
#include <random>
#include <cassert>
using namespace std;

typedef long long ll;
typedef long double ld;

#define ff first
#define ss second

ll ttt;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const ll maxN = 200507;
const ll LG = 18;
ll n, m, k;
set<pair<ll, ll>>g[maxN];
ll sz[maxN];
ll ans = INF;
map<ll, ll>cnt;

void dfs(ll v, ll par = -1) {
    sz[v] = 1;
    for (auto to : g[v]) {
        if (to.ff != par) {
            dfs(to.ff, v);
            sz[v] += sz[to.ff];
        }
    }
}

ll centroid(ll v, ll size, ll par = -1) {
    for (auto to : g[v]) {
        if (to.ff != par && sz[to.ff] > size / 2) {
            return centroid(to.ff, size, v);
        }
    }
    return v;
}

void upd_ans(ll v, ll dpt, ll size, ll cur, ll par = -1) {
    if (dpt <= k) {
        //cout << dpt << " ";
        if (k == dpt) {
            ans = min(ans, cur);
            //cout << "E ARECI HETO?\n";
        }
        else {
            ans = min(ans, (cnt[k - dpt] == 0 ? INF : cnt[k - dpt]) + cur);
        }
    }
    for (auto to : g[v]) {
        if (to.ff != par) {
            upd_ans(to.ff, dpt + to.ss, size, cur + 1, v);
        }
    }
}

void upd_cnt(ll v, ll dpt, ll cur, ll par = -1) {
    if (dpt != 0) {
        //cout << dpt << " ";
        if (cnt[dpt] == 0) {
            cnt[dpt] = cur;
        }
        else {
            cnt[dpt] = min(cnt[dpt], cur);
        }
        //cout << v << ": " << dpt << ": " << cnt[dpt] << endl;
    }
    for (auto to : g[v]) {
        if (to.ff != par) {
            upd_cnt(to.ff, dpt + to.ss, cur + 1, v);
        }
    }
}

void mshak(ll c, ll size) {
    //cout << "MSHAKUM ENQ: " << c << endl;
    cnt.clear();
    for (auto to : g[c]) {
        upd_ans(to.ff, to.ss, size, 1, c);
        upd_cnt(to.ff, to.ss, 1, c);
    }
    /*for (auto x : cnt) {
        if(x.ff==k)cout << x.ff << ": " << x.ss << endl;
    }*/
}

void cntr_dec(ll v, ll par = -1) {
    dfs(v, par);
    ll c = centroid(v, sz[v], par);
    mshak(c, sz[v]);
    set<pair<ll, ll>>g_copy(g[c]);
    for (auto to : g_copy) {
        g[c].erase(to);
        g[to.ff].erase({ c,to.ss });
        cntr_dec(to.ff, c);
    }
}

int best_path(int NN, int K, int H[][2], int L[]) {
    n = NN;
    k = K;
    for (int i = 0; i < n - 1; i++) {
        g[H[i][0]].insert({ H[i][1],L[i] });
        g[H[i][1]].insert({ H[i][0],L[i] });
    }
    cntr_dec(1);
    return (ans == INF ? -1 : ans);
}

/// ---- - --------  ------ -------- -- - - -
/// Just a reminder. Ubuntu password is I O I
/// ---- - --------  ------ -------- -- - - -

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 5 ms 9772 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 6 ms 9736 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9736 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 5 ms 9772 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 6 ms 9736 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9736 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9732 KB Output is correct
20 Correct 5 ms 9812 KB Output is correct
21 Correct 7 ms 9872 KB Output is correct
22 Correct 7 ms 9940 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 7 ms 9940 KB Output is correct
26 Correct 7 ms 9940 KB Output is correct
27 Correct 6 ms 9812 KB Output is correct
28 Correct 7 ms 9940 KB Output is correct
29 Correct 7 ms 9940 KB Output is correct
30 Correct 9 ms 9940 KB Output is correct
31 Correct 7 ms 9952 KB Output is correct
32 Correct 7 ms 9940 KB Output is correct
33 Correct 8 ms 10004 KB Output is correct
34 Correct 7 ms 9872 KB Output is correct
35 Correct 8 ms 9940 KB Output is correct
36 Correct 7 ms 9864 KB Output is correct
37 Correct 8 ms 9872 KB Output is correct
38 Correct 7 ms 10000 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 5 ms 9772 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 6 ms 9736 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9736 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 363 ms 25680 KB Output is correct
20 Correct 355 ms 25676 KB Output is correct
21 Correct 362 ms 25568 KB Output is correct
22 Correct 344 ms 25592 KB Output is correct
23 Correct 403 ms 25804 KB Output is correct
24 Correct 218 ms 25548 KB Output is correct
25 Correct 325 ms 31532 KB Output is correct
26 Correct 137 ms 31692 KB Output is correct
27 Correct 460 ms 41740 KB Output is correct
28 Correct 1126 ms 65808 KB Output is correct
29 Correct 1104 ms 65168 KB Output is correct
30 Correct 461 ms 41784 KB Output is correct
31 Correct 454 ms 41640 KB Output is correct
32 Correct 540 ms 41888 KB Output is correct
33 Correct 742 ms 41800 KB Output is correct
34 Correct 954 ms 54888 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Correct 6 ms 9684 KB Output is correct
6 Correct 5 ms 9684 KB Output is correct
7 Correct 5 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 5 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 5 ms 9772 KB Output is correct
12 Correct 5 ms 9684 KB Output is correct
13 Correct 6 ms 9736 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9736 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9732 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 5 ms 9732 KB Output is correct
20 Correct 5 ms 9812 KB Output is correct
21 Correct 7 ms 9872 KB Output is correct
22 Correct 7 ms 9940 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9940 KB Output is correct
25 Correct 7 ms 9940 KB Output is correct
26 Correct 7 ms 9940 KB Output is correct
27 Correct 6 ms 9812 KB Output is correct
28 Correct 7 ms 9940 KB Output is correct
29 Correct 7 ms 9940 KB Output is correct
30 Correct 9 ms 9940 KB Output is correct
31 Correct 7 ms 9952 KB Output is correct
32 Correct 7 ms 9940 KB Output is correct
33 Correct 8 ms 10004 KB Output is correct
34 Correct 7 ms 9872 KB Output is correct
35 Correct 8 ms 9940 KB Output is correct
36 Correct 7 ms 9864 KB Output is correct
37 Correct 8 ms 9872 KB Output is correct
38 Correct 7 ms 10000 KB Output is correct
39 Correct 363 ms 25680 KB Output is correct
40 Correct 355 ms 25676 KB Output is correct
41 Correct 362 ms 25568 KB Output is correct
42 Correct 344 ms 25592 KB Output is correct
43 Correct 403 ms 25804 KB Output is correct
44 Correct 218 ms 25548 KB Output is correct
45 Correct 325 ms 31532 KB Output is correct
46 Correct 137 ms 31692 KB Output is correct
47 Correct 460 ms 41740 KB Output is correct
48 Correct 1126 ms 65808 KB Output is correct
49 Correct 1104 ms 65168 KB Output is correct
50 Correct 461 ms 41784 KB Output is correct
51 Correct 454 ms 41640 KB Output is correct
52 Correct 540 ms 41888 KB Output is correct
53 Correct 742 ms 41800 KB Output is correct
54 Correct 954 ms 54888 KB Output is correct
55 Correct 34 ms 11728 KB Output is correct
56 Correct 24 ms 11220 KB Output is correct
57 Correct 219 ms 25468 KB Output is correct
58 Correct 110 ms 31436 KB Output is correct
59 Correct 440 ms 40584 KB Output is correct
60 Correct 1526 ms 74316 KB Output is correct
61 Correct 529 ms 43464 KB Output is correct
62 Correct 503 ms 41976 KB Output is correct
63 Correct 612 ms 41868 KB Output is correct
64 Correct 1662 ms 54316 KB Output is correct
65 Correct 975 ms 54988 KB Output is correct
66 Correct 1409 ms 65600 KB Output is correct
67 Correct 390 ms 54588 KB Output is correct
68 Correct 870 ms 57180 KB Output is correct
69 Correct 882 ms 57460 KB Output is correct
70 Correct 759 ms 55116 KB Output is correct