oj.uz

Submission #526180

# Submission time Handle Problem Language Result Execution time Memory
526180 2022-02-13T21:45:06 Z lkh3happy Split the Attractions (IOI19_split) C++14
100 / 100
 136 ms 14908 KB 
#include "split.h"
#include <bits/stdc++.h>
using namespace std;

int pa[100001], sz[100001], siz[100001], vis[100001], cnt[4];
vector<int> v[100001], ans;
vector<pair<int, int> > v1;

int find(int x){
    if(pa[x]==-1) return x;
    return pa[x]=find(pa[x]);
}

int uni(int x, int y){
    x=find(x); y=find(y);
    if(x==y) return 0;
    sz[x]+=sz[y]; pa[y]=x;
    return sz[x];
}

int getsz(int prev, int now){
    int s=1;
    for(auto &i:v[now]) if(prev!=i) s+=getsz(now, i);
    return siz[now]=s;
}

int getct(int prev, int now, int n){
    for(auto &i:v[now]) if(prev!=i && siz[i]>n/2) return getct(now, i, n);
    return now;
}

void dfs(int now, int ct, int s, int mx){
    vis[now]=1;
    if(cnt[s]==mx) return;
    cnt[s]++; ans[now]=s;
    for(auto &i:v[now]) if(!vis[i] && ct!=i) dfs(i, ct, s, mx);
}

vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
    int x=1, y=2, z=3, m=p.size();
    if(a>b) swap(a, b), swap(x, y);
    if(b>c) swap(b, c), swap(y, z);
    if(a>c) swap(a, c), swap(z, x);
	ans.resize(n);
	for(int i=0;i<=100000;i++) pa[i]=-1, sz[i]=1;
	for(int i=0;i<m;i++){
	    if(uni(p[i], q[i])) v[p[i]].push_back(q[i]), v[q[i]].push_back(p[i]);
	    else v1.push_back({p[i], q[i]});
	}
	getsz(-1, 0);
	int ct=getct(-1, 0, n), po=0, pn;
	for(auto &i:v[ct]) if(getsz(ct, i)>=a) po=1, pn=i;
	if(po){
	    dfs(pn, ct, x, a); dfs(ct, ct, y, b);
	    for(auto &i:ans) if(!i) i=z;
	    return ans;
	}
	for(int i=0;i<=100000;i++) pa[i]=-1, sz[i]=1;
	for(int i=0;i<n;i++) if(i!=ct) for(auto &j:v[i]) if(j!=ct) uni(i, j); 
	for(auto &[i,j]:v1){
	    if(i==ct || j==ct) continue;
	    int s=uni(i, j);
	    if(s) v[i].push_back(j), v[j].push_back(i);
	    if(s>=a){
	        po=1; pn=i; break;
	    }
	}
	if(!po) return ans;
	dfs(pn, ct, x, a); dfs(ct, ct, y, b);
	for(auto &i:ans) if(!i) i=z;
	return ans;
}

Compilation message

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:60:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   60 |  for(auto &[i,j]:v1){
      |            ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB ok, correct split
2 Correct 2 ms 3404 KB ok, correct split
3 Correct 2 ms 3404 KB ok, correct split
4 Correct 2 ms 3404 KB ok, correct split
5 Correct 3 ms 3404 KB ok, correct split
6 Correct 3 ms 3416 KB ok, correct split
7 Correct 95 ms 14396 KB ok, correct split
8 Correct 62 ms 12868 KB ok, correct split
9 Correct 68 ms 13856 KB ok, correct split
10 Correct 94 ms 13892 KB ok, correct split
11 Correct 72 ms 13664 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB ok, correct split
2 Correct 2 ms 3416 KB ok, correct split
3 Correct 2 ms 3420 KB ok, correct split
4 Correct 88 ms 12244 KB ok, correct split
5 Correct 61 ms 10932 KB ok, correct split
6 Correct 83 ms 13904 KB ok, correct split
7 Correct 69 ms 13892 KB ok, correct split
8 Correct 86 ms 13960 KB ok, correct split
9 Correct 93 ms 10828 KB ok, correct split
10 Correct 46 ms 10824 KB ok, correct split
11 Correct 44 ms 10832 KB ok, correct split
12 Correct 47 ms 11180 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB ok, correct split
2 Correct 66 ms 10844 KB ok, correct split
3 Correct 24 ms 6488 KB ok, correct split
4 Correct 2 ms 3404 KB ok, correct split
5 Correct 86 ms 12640 KB ok, correct split
6 Correct 78 ms 12740 KB ok, correct split
7 Correct 71 ms 12628 KB ok, correct split
8 Correct 108 ms 12636 KB ok, correct split
9 Correct 81 ms 12744 KB ok, correct split
10 Correct 20 ms 5724 KB ok, no valid answer
11 Correct 34 ms 6980 KB ok, no valid answer
12 Correct 60 ms 10688 KB ok, no valid answer
13 Correct 63 ms 10500 KB ok, no valid answer
14 Correct 43 ms 10848 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3396 KB ok, correct split
2 Correct 2 ms 3416 KB ok, no valid answer
3 Correct 2 ms 3416 KB ok, correct split
4 Correct 2 ms 3432 KB ok, correct split
5 Correct 2 ms 3404 KB ok, correct split
6 Correct 2 ms 3416 KB ok, correct split
7 Correct 2 ms 3404 KB ok, correct split
8 Correct 2 ms 3404 KB ok, correct split
9 Correct 4 ms 3544 KB ok, correct split
10 Correct 4 ms 3660 KB ok, correct split
11 Correct 2 ms 3412 KB ok, correct split
12 Correct 4 ms 3660 KB ok, correct split
13 Correct 2 ms 3404 KB ok, correct split
14 Correct 2 ms 3404 KB ok, correct split
15 Correct 2 ms 3404 KB ok, correct split
16 Correct 2 ms 3404 KB ok, correct split
17 Correct 2 ms 3404 KB ok, correct split
18 Correct 2 ms 3424 KB ok, correct split
19 Correct 2 ms 3404 KB ok, correct split
20 Correct 3 ms 3404 KB ok, correct split
21 Correct 5 ms 3660 KB ok, correct split
22 Correct 3 ms 3660 KB ok, correct split
23 Correct 3 ms 3660 KB ok, correct split
24 Correct 3 ms 3604 KB ok, correct split
25 Correct 3 ms 3556 KB ok, correct split
26 Correct 4 ms 3660 KB ok, correct split
27 Correct 3 ms 3660 KB ok, correct split
28 Correct 3 ms 3624 KB ok, correct split
29 Correct 2 ms 3404 KB ok, correct split
30 Correct 5 ms 3688 KB ok, correct split
31 Correct 4 ms 3404 KB ok, correct split
32 Correct 3 ms 3404 KB ok, correct split
33 Correct 2 ms 3424 KB ok, correct split
34 Correct 3 ms 3532 KB ok, correct split
35 Correct 3 ms 3532 KB ok, correct split
36 Correct 3 ms 3552 KB ok, correct split
37 Correct 6 ms 3660 KB ok, correct split
38 Correct 4 ms 3632 KB ok, correct split
39 Correct 5 ms 3660 KB ok, correct split
40 Correct 4 ms 3684 KB ok, correct split
41 Correct 3 ms 3532 KB ok, correct split
42 Correct 3 ms 3560 KB ok, correct split
43 Correct 4 ms 3684 KB ok, correct split
44 Correct 5 ms 3688 KB ok, correct split
45 Correct 4 ms 3692 KB ok, correct split
46 Correct 3 ms 3592 KB ok, correct split
47 Correct 4 ms 3532 KB ok, no valid answer
48 Correct 3 ms 3560 KB ok, correct split
49 Correct 3 ms 3648 KB ok, correct split
50 Correct 2 ms 3404 KB ok, no valid answer
51 Correct 2 ms 3404 KB ok, no valid answer
52 Correct 4 ms 3532 KB ok, no valid answer
53 Correct 4 ms 3636 KB ok, no valid answer
54 Correct 3 ms 3512 KB ok, no valid answer
55 Correct 3 ms 3660 KB ok, no valid answer
56 Correct 3 ms 3532 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB ok, correct split
2 Correct 2 ms 3404 KB ok, correct split
3 Correct 2 ms 3404 KB ok, correct split
4 Correct 2 ms 3404 KB ok, correct split
5 Correct 3 ms 3404 KB ok, correct split
6 Correct 3 ms 3416 KB ok, correct split
7 Correct 95 ms 14396 KB ok, correct split
8 Correct 62 ms 12868 KB ok, correct split
9 Correct 68 ms 13856 KB ok, correct split
10 Correct 94 ms 13892 KB ok, correct split
11 Correct 72 ms 13664 KB ok, correct split
12 Correct 2 ms 3404 KB ok, correct split
13 Correct 2 ms 3416 KB ok, correct split
14 Correct 2 ms 3420 KB ok, correct split
15 Correct 88 ms 12244 KB ok, correct split
16 Correct 61 ms 10932 KB ok, correct split
17 Correct 83 ms 13904 KB ok, correct split
18 Correct 69 ms 13892 KB ok, correct split
19 Correct 86 ms 13960 KB ok, correct split
20 Correct 93 ms 10828 KB ok, correct split
21 Correct 46 ms 10824 KB ok, correct split
22 Correct 44 ms 10832 KB ok, correct split
23 Correct 47 ms 11180 KB ok, correct split
24 Correct 2 ms 3404 KB ok, correct split
25 Correct 66 ms 10844 KB ok, correct split
26 Correct 24 ms 6488 KB ok, correct split
27 Correct 2 ms 3404 KB ok, correct split
28 Correct 86 ms 12640 KB ok, correct split
29 Correct 78 ms 12740 KB ok, correct split
30 Correct 71 ms 12628 KB ok, correct split
31 Correct 108 ms 12636 KB ok, correct split
32 Correct 81 ms 12744 KB ok, correct split
33 Correct 20 ms 5724 KB ok, no valid answer
34 Correct 34 ms 6980 KB ok, no valid answer
35 Correct 60 ms 10688 KB ok, no valid answer
36 Correct 63 ms 10500 KB ok, no valid answer
37 Correct 43 ms 10848 KB ok, no valid answer
38 Correct 2 ms 3396 KB ok, correct split
39 Correct 2 ms 3416 KB ok, no valid answer
40 Correct 2 ms 3416 KB ok, correct split
41 Correct 2 ms 3432 KB ok, correct split
42 Correct 2 ms 3404 KB ok, correct split
43 Correct 2 ms 3416 KB ok, correct split
44 Correct 2 ms 3404 KB ok, correct split
45 Correct 2 ms 3404 KB ok, correct split
46 Correct 4 ms 3544 KB ok, correct split
47 Correct 4 ms 3660 KB ok, correct split
48 Correct 2 ms 3412 KB ok, correct split
49 Correct 4 ms 3660 KB ok, correct split
50 Correct 2 ms 3404 KB ok, correct split
51 Correct 2 ms 3404 KB ok, correct split
52 Correct 2 ms 3404 KB ok, correct split
53 Correct 2 ms 3404 KB ok, correct split
54 Correct 2 ms 3404 KB ok, correct split
55 Correct 2 ms 3424 KB ok, correct split
56 Correct 2 ms 3404 KB ok, correct split
57 Correct 3 ms 3404 KB ok, correct split
58 Correct 5 ms 3660 KB ok, correct split
59 Correct 3 ms 3660 KB ok, correct split
60 Correct 3 ms 3660 KB ok, correct split
61 Correct 3 ms 3604 KB ok, correct split
62 Correct 3 ms 3556 KB ok, correct split
63 Correct 4 ms 3660 KB ok, correct split
64 Correct 3 ms 3660 KB ok, correct split
65 Correct 3 ms 3624 KB ok, correct split
66 Correct 2 ms 3404 KB ok, correct split
67 Correct 5 ms 3688 KB ok, correct split
68 Correct 4 ms 3404 KB ok, correct split
69 Correct 3 ms 3404 KB ok, correct split
70 Correct 2 ms 3424 KB ok, correct split
71 Correct 3 ms 3532 KB ok, correct split
72 Correct 3 ms 3532 KB ok, correct split
73 Correct 3 ms 3552 KB ok, correct split
74 Correct 6 ms 3660 KB ok, correct split
75 Correct 4 ms 3632 KB ok, correct split
76 Correct 5 ms 3660 KB ok, correct split
77 Correct 4 ms 3684 KB ok, correct split
78 Correct 3 ms 3532 KB ok, correct split
79 Correct 3 ms 3560 KB ok, correct split
80 Correct 4 ms 3684 KB ok, correct split
81 Correct 5 ms 3688 KB ok, correct split
82 Correct 4 ms 3692 KB ok, correct split
83 Correct 3 ms 3592 KB ok, correct split
84 Correct 4 ms 3532 KB ok, no valid answer
85 Correct 3 ms 3560 KB ok, correct split
86 Correct 3 ms 3648 KB ok, correct split
87 Correct 2 ms 3404 KB ok, no valid answer
88 Correct 2 ms 3404 KB ok, no valid answer
89 Correct 4 ms 3532 KB ok, no valid answer
90 Correct 4 ms 3636 KB ok, no valid answer
91 Correct 3 ms 3512 KB ok, no valid answer
92 Correct 3 ms 3660 KB ok, no valid answer
93 Correct 3 ms 3532 KB ok, no valid answer
94 Correct 86 ms 11508 KB ok, correct split
95 Correct 93 ms 14424 KB ok, correct split
96 Correct 90 ms 13268 KB ok, correct split
97 Correct 22 ms 6356 KB ok, correct split
98 Correct 28 ms 6724 KB ok, correct split
99 Correct 34 ms 8144 KB ok, correct split
100 Correct 90 ms 14296 KB ok, correct split
101 Correct 77 ms 13368 KB ok, correct split
102 Correct 81 ms 13396 KB ok, correct split
103 Correct 72 ms 13084 KB ok, correct split
104 Correct 78 ms 14908 KB ok, correct split
105 Correct 38 ms 8032 KB ok, correct split
106 Correct 73 ms 14640 KB ok, correct split
107 Correct 64 ms 10960 KB ok, correct split
108 Correct 63 ms 10828 KB ok, correct split
109 Correct 100 ms 14000 KB ok, correct split
110 Correct 96 ms 14520 KB ok, correct split
111 Correct 136 ms 14552 KB ok, correct split
112 Correct 89 ms 14776 KB ok, correct split
113 Correct 103 ms 14816 KB ok, correct split
114 Correct 13 ms 4568 KB ok, correct split
115 Correct 9 ms 4576 KB ok, correct split
116 Correct 76 ms 14520 KB ok, correct split
117 Correct 89 ms 14244 KB ok, correct split
118 Correct 65 ms 10884 KB ok, correct split
119 Correct 65 ms 10836 KB ok, correct split
120 Correct 71 ms 12368 KB ok, correct split
121 Correct 88 ms 10596 KB ok, no valid answer
122 Correct 59 ms 10596 KB ok, no valid answer
123 Correct 96 ms 13920 KB ok, no valid answer
124 Correct 120 ms 13924 KB ok, no valid answer
125 Correct 55 ms 11740 KB ok, no valid answer
126 Correct 39 ms 10188 KB ok, no valid answer
127 Correct 68 ms 12472 KB ok, no valid answer