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답안 #879751

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
879751 2023-11-28T04:03:16 Z Alora Parkovi (COCI22_parkovi) C++17
110 / 110
 1569 ms 38400 KB 
#include <bits/stdc++.h>
#define Alora "cownav"
#define fi(i,a,b) for(int i = a; i <= b; i++)
#define fid(i,a,b) for(int i = a; i >= b; i--)
#define ll long long
#define f first
#define se second
#define pii pair<int, int>
#define getbit(i, j) ((i >> j) & 1)
#define all(v) v.begin(), v.end()
#define pb push_back
#define maxn 200005
const int M = 1e9 + 7;
using namespace std;
int n, k, place[maxn], ans;
ll reach[maxn], dist[maxn], sum, oo = 1e18;
vector <pii> g[maxn];
void dfs(int u, int fa, ll lim){
    for(auto [v, w]: g[u]) if(v != fa){
        dfs(v, u, lim);
        if(reach[v] + min(1ll*w, dist[v]) <= lim){
            if(reach[v] + dist[v] > lim)
                reach[u] = max(reach[u], reach[v] + w);
            dist[u] = min(dist[u], dist[v] + w);
        }
        else{
            place[v] = 1; ans++;
            dist[u] = min(dist[u], 1ll*w);
        }
    }
}
int cnt(ll lim){
    fi(i, 1, n) reach[i] = 0, dist[i] = oo, place[i] = 0;
    ans = 0;
    dfs(1, 1, lim);
    if(reach[1] + dist[1] > lim) ans++, place[1] = 1;
    return ans;
}
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	if(fopen(Alora".inp", "r")){
    freopen(Alora".inp", "r", stdin);
    freopen(Alora".out", "w", stdout);}
    cin >> n >> k;
    fi(i, 1, n - 1){
        int u, v, w; cin >> u >> v >> w;
        g[u].pb({v, w});
        g[v].pb({u, w});
        sum += w;
    }
    ll d = 0, c = 1e18;
    while(d <= c){
        ll g = (d + c)/2;
        if(cnt(g) <= k) c = g - 1;
        else d = g + 1;
    }
    cout << d << '\n';
    int x = cnt(d);
    fi(i, 1, n){
        if(place[i]) cout << i << " ";
        else if(x < k) x++, cout << i << " ";
    }
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen(Alora".inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:44:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |     freopen(Alora".out", "w", stdout);}
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 1 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 1 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 3 ms 8848 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 2 ms 8796 KB Output is correct
12 Correct 2 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 336 ms 32484 KB Output is correct
2 Correct 407 ms 33048 KB Output is correct
3 Correct 245 ms 21180 KB Output is correct
4 Correct 574 ms 20048 KB Output is correct
5 Correct 624 ms 19788 KB Output is correct
6 Correct 582 ms 19764 KB Output is correct
7 Correct 629 ms 18768 KB Output is correct
8 Correct 742 ms 19280 KB Output is correct
9 Correct 562 ms 19556 KB Output is correct
10 Correct 725 ms 20080 KB Output is correct
11 Correct 504 ms 21844 KB Output is correct
12 Correct 493 ms 21744 KB Output is correct
13 Correct 588 ms 22804 KB Output is correct
14 Correct 528 ms 20696 KB Output is correct
15 Correct 478 ms 19792 KB Output is correct
16 Correct 500 ms 21268 KB Output is correct
17 Correct 472 ms 20372 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 429 ms 33364 KB Output is correct
2 Correct 370 ms 37124 KB Output is correct
3 Correct 318 ms 35412 KB Output is correct
4 Correct 330 ms 35576 KB Output is correct
5 Correct 354 ms 37616 KB Output is correct
6 Correct 401 ms 37336 KB Output is correct
7 Correct 371 ms 38364 KB Output is correct
8 Correct 354 ms 37464 KB Output is correct
9 Correct 391 ms 37204 KB Output is correct
10 Correct 347 ms 36692 KB Output is correct
11 Correct 348 ms 35408 KB Output is correct
12 Correct 388 ms 38184 KB Output is correct
13 Correct 383 ms 38400 KB Output is correct
14 Correct 375 ms 37600 KB Output is correct
15 Correct 363 ms 35668 KB Output is correct
16 Correct 325 ms 34612 KB Output is correct
17 Correct 338 ms 34428 KB Output is correct
18 Correct 349 ms 36096 KB Output is correct
19 Correct 418 ms 35516 KB Output is correct
20 Correct 351 ms 36268 KB Output is correct
21 Correct 356 ms 35668 KB Output is correct

Subtask #4
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 1 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 1 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 3 ms 8848 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 2 ms 8796 KB Output is correct
12 Correct 2 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 336 ms 32484 KB Output is correct
16 Correct 407 ms 33048 KB Output is correct
17 Correct 245 ms 21180 KB Output is correct
18 Correct 574 ms 20048 KB Output is correct
19 Correct 624 ms 19788 KB Output is correct
20 Correct 582 ms 19764 KB Output is correct
21 Correct 629 ms 18768 KB Output is correct
22 Correct 742 ms 19280 KB Output is correct
23 Correct 562 ms 19556 KB Output is correct
24 Correct 725 ms 20080 KB Output is correct
25 Correct 504 ms 21844 KB Output is correct
26 Correct 493 ms 21744 KB Output is correct
27 Correct 588 ms 22804 KB Output is correct
28 Correct 528 ms 20696 KB Output is correct
29 Correct 478 ms 19792 KB Output is correct
30 Correct 500 ms 21268 KB Output is correct
31 Correct 472 ms 20372 KB Output is correct
32 Correct 429 ms 33364 KB Output is correct
33 Correct 370 ms 37124 KB Output is correct
34 Correct 318 ms 35412 KB Output is correct
35 Correct 330 ms 35576 KB Output is correct
36 Correct 354 ms 37616 KB Output is correct
37 Correct 401 ms 37336 KB Output is correct
38 Correct 371 ms 38364 KB Output is correct
39 Correct 354 ms 37464 KB Output is correct
40 Correct 391 ms 37204 KB Output is correct
41 Correct 347 ms 36692 KB Output is correct
42 Correct 348 ms 35408 KB Output is correct
43 Correct 388 ms 38184 KB Output is correct
44 Correct 383 ms 38400 KB Output is correct
45 Correct 375 ms 37600 KB Output is correct
46 Correct 363 ms 35668 KB Output is correct
47 Correct 325 ms 34612 KB Output is correct
48 Correct 338 ms 34428 KB Output is correct
49 Correct 349 ms 36096 KB Output is correct
50 Correct 418 ms 35516 KB Output is correct
51 Correct 351 ms 36268 KB Output is correct
52 Correct 356 ms 35668 KB Output is correct
53 Correct 733 ms 20252 KB Output is correct
54 Correct 1229 ms 20248 KB Output is correct
55 Correct 1569 ms 20948 KB Output is correct
56 Correct 1370 ms 20564 KB Output is correct
57 Correct 971 ms 20796 KB Output is correct
58 Correct 866 ms 20184 KB Output is correct
59 Correct 943 ms 21676 KB Output is correct
60 Correct 986 ms 19612 KB Output is correct
61 Correct 780 ms 18516 KB Output is correct
62 Correct 759 ms 18940 KB Output is correct
63 Correct 1060 ms 19536 KB Output is correct
64 Correct 866 ms 20056 KB Output is correct
65 Correct 922 ms 19932 KB Output is correct
66 Correct 869 ms 19992 KB Output is correct
67 Correct 712 ms 19024 KB Output is correct
68 Correct 960 ms 21168 KB Output is correct
69 Correct 349 ms 37312 KB Output is correct
70 Correct 346 ms 35232 KB Output is correct
71 Correct 458 ms 38312 KB Output is correct
72 Correct 226 ms 20384 KB Output is correct
73 Correct 241 ms 19648 KB Output is correct
74 Correct 301 ms 20416 KB Output is correct
75 Correct 647 ms 22332 KB Output is correct
76 Correct 665 ms 21452 KB Output is correct
77 Correct 608 ms 21584 KB Output is correct
78 Correct 633 ms 20888 KB Output is correct