oj.uz

Submission #300203

# Submission time Handle Problem Language Result Execution time Memory
300203 2020-09-17T00:51:55 Z Gajowy Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 275 ms 22264 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#include "supertrees.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define mp make_pair
#define eb emplace_back
#define pb push_back
#define e1 first
#define e2 second
#define uint uint_fast64_t
#define ll int_fast64_t
#define ull uint_fast64_t
#define int16 int_fast16_t
#define uint16 uint_fast16_t
#define int32 int_fast32_t
#define uint32 uint_fast32_t
#define int64 int_fast64_t
#define uint64 uint_fast64_t
#define ld long double
#define float long double
#define size(x) (int)x.size()
#define satori int testCases; cin>>testCases; while(testCases--)
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define all(r) begin(r),end(r)
#define rall(r) rbegin(r),rend(r)
#define time chrono::high_resolution_clock().now().time_since_epoch().count()
#define elapsed(__begin,__end) (__end-__begin)/CLOCKS_PER_SEC
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
float pi=3.14159265358979323846;

const int MAXN=1e3+10;

bool vis[MAXN],vis2[MAXN];
vector<int> cmp;
int rep[MAXN],sz[MAXN],col[MAXN],cols=0;

void dfs(int u,vector<vector<int>> &g)
{
	vis[u]=true;
	cmp.eb(u);
	for(int v=0;v<size(g);v++)
		if(!vis[v]&&g[u][v]==1)
			dfs(v,g);
}

int fnd(int u)
{
	return (rep[u]==u?u:rep[u]=fnd(rep[u]));
}

void dfs2(int u,vector<vector<int>> &g)
{
	vis[u]=true;
	col[u]=cols;
	if(!vis2[fnd(u)])
		vis2[fnd(u)]=true,cmp.eb(fnd(u));
	for(int v=0;v<size(g);v++)
		if(!vis[v]&&g[u][v])
			dfs2(v,g);
}

bool onion(int u,int v)
{
	u=fnd(u),v=fnd(v);
	if(u==v)
		return false;
	if(sz[v]>sz[u])
		swap(u,v);
	sz[u]+=sz[v];
	rep[v]=u;
	return true;
}

int construct(vector<vector<int>> g)
{
	int n=size(g);
	vector<vector<int>> res(n,vector<int>(n,0));
	for(int i=1;i<=n;i++)
		rep[i]=i,sz[i]=1;
	for(int i=0;i<n;i++)
		for(int j=0;j<n;j++)
			if(g[i][j]==3)
				return 0;
	for(int i=0;i<n;i++)
		if(!vis[i])
		{
			cmp.clear();
			dfs(i,g);
			if(size(cmp)==1)
				continue;
			for(auto u:cmp)
				for(auto v:cmp)
					if(u!=v&&g[u][v]!=1)
						return 0;
			for(int i=1;i<size(cmp);i++)
				if(onion(cmp[i-1],cmp[i]))
					res[cmp[i-1]][cmp[i]]=res[cmp[i]][cmp[i-1]]=1;
		}
	for(int i=0;i<n;i++)
		vis[i]=false;
	for(int i=0;i<n;i++)
		if(!vis[i])
		{
			cmp.clear();
			cols++;
			dfs2(i,g);
			if(size(cmp)==1)
				continue;
			if(size(cmp)==2)
				return 0;
			for(int i=1;i<size(cmp);i++)
				res[cmp[i-1]][cmp[i]]=res[cmp[i]][cmp[i-1]]=1;
			res[cmp.back()][cmp[0]]=res[cmp[0]][cmp.back()]=1;
		}
	for(int i=0;i<n;i++)
		for(int j=0;j<n;j++)
			if(col[i]==col[j])
			{
				if(fnd(i)==fnd(j))
				{
					if(g[i][j]!=1)
						return 0;
				}
				else
				{
					if(g[i][j]!=2)
						return 0;
				}
			}
			else
			if(g[i][j])
				return 0;
	build(res);
	return 1;
}

Compilation message

supertrees.cpp:2: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    2 | #pragma GCC optimization ("O3")
      | 
supertrees.cpp:3: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 262 ms 22236 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 262 ms 22236 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 263 ms 22140 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12260 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 5856 KB Output is correct
21 Correct 260 ms 22136 KB Output is correct
22 Correct 259 ms 22264 KB Output is correct
23 Correct 275 ms 22136 KB Output is correct
24 Correct 255 ms 22136 KB Output is correct
25 Correct 111 ms 12152 KB Output is correct
26 Correct 113 ms 12152 KB Output is correct
27 Correct 268 ms 22136 KB Output is correct
28 Correct 252 ms 22136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 11 ms 1184 KB Output is correct
9 Correct 252 ms 22108 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 11 ms 1280 KB Output is correct
13 Correct 262 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 125 ms 12280 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 65 ms 5756 KB Output is correct
22 Correct 261 ms 22140 KB Output is correct
23 Correct 261 ms 22136 KB Output is correct
24 Correct 264 ms 22136 KB Output is correct
25 Correct 114 ms 12152 KB Output is correct
26 Correct 114 ms 12152 KB Output is correct
27 Correct 275 ms 22168 KB Output is correct
28 Correct 267 ms 22136 KB Output is correct
29 Correct 113 ms 12280 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 67 ms 5880 KB Output is correct
5 Correct 261 ms 22136 KB Output is correct
6 Correct 257 ms 22224 KB Output is correct
7 Correct 265 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 65 ms 5880 KB Output is correct
10 Correct 255 ms 22136 KB Output is correct
11 Correct 256 ms 22264 KB Output is correct
12 Correct 261 ms 22136 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 64 ms 5752 KB Output is correct
17 Correct 259 ms 22136 KB Output is correct
18 Correct 261 ms 22136 KB Output is correct
19 Correct 258 ms 22136 KB Output is correct
20 Correct 254 ms 22136 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 262 ms 22236 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 263 ms 22140 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12260 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 5856 KB Output is correct
21 Correct 260 ms 22136 KB Output is correct
22 Correct 259 ms 22264 KB Output is correct
23 Correct 275 ms 22136 KB Output is correct
24 Correct 255 ms 22136 KB Output is correct
25 Correct 111 ms 12152 KB Output is correct
26 Correct 113 ms 12152 KB Output is correct
27 Correct 268 ms 22136 KB Output is correct
28 Correct 252 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1184 KB Output is correct
37 Correct 252 ms 22108 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 11 ms 1280 KB Output is correct
41 Correct 262 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 125 ms 12280 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 65 ms 5756 KB Output is correct
50 Correct 261 ms 22140 KB Output is correct
51 Correct 261 ms 22136 KB Output is correct
52 Correct 264 ms 22136 KB Output is correct
53 Correct 114 ms 12152 KB Output is correct
54 Correct 114 ms 12152 KB Output is correct
55 Correct 275 ms 22168 KB Output is correct
56 Correct 267 ms 22136 KB Output is correct
57 Correct 113 ms 12280 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 5 ms 768 KB Output is correct
61 Correct 116 ms 12280 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 1 ms 384 KB Output is correct
64 Correct 1 ms 384 KB Output is correct
65 Correct 64 ms 5752 KB Output is correct
66 Correct 113 ms 12152 KB Output is correct
67 Correct 109 ms 12152 KB Output is correct
68 Correct 118 ms 12152 KB Output is correct
69 Correct 110 ms 12280 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 262 ms 22236 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 263 ms 22140 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12260 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 5856 KB Output is correct
21 Correct 260 ms 22136 KB Output is correct
22 Correct 259 ms 22264 KB Output is correct
23 Correct 275 ms 22136 KB Output is correct
24 Correct 255 ms 22136 KB Output is correct
25 Correct 111 ms 12152 KB Output is correct
26 Correct 113 ms 12152 KB Output is correct
27 Correct 268 ms 22136 KB Output is correct
28 Correct 252 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1184 KB Output is correct
37 Correct 252 ms 22108 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 11 ms 1280 KB Output is correct
41 Correct 262 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 125 ms 12280 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 65 ms 5756 KB Output is correct
50 Correct 261 ms 22140 KB Output is correct
51 Correct 261 ms 22136 KB Output is correct
52 Correct 264 ms 22136 KB Output is correct
53 Correct 114 ms 12152 KB Output is correct
54 Correct 114 ms 12152 KB Output is correct
55 Correct 275 ms 22168 KB Output is correct
56 Correct 267 ms 22136 KB Output is correct
57 Correct 113 ms 12280 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 384 KB Output is correct
61 Correct 67 ms 5880 KB Output is correct
62 Correct 261 ms 22136 KB Output is correct
63 Correct 257 ms 22224 KB Output is correct
64 Correct 265 ms 22136 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 65 ms 5880 KB Output is correct
67 Correct 255 ms 22136 KB Output is correct
68 Correct 256 ms 22264 KB Output is correct
69 Correct 261 ms 22136 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 64 ms 5752 KB Output is correct
74 Correct 259 ms 22136 KB Output is correct
75 Correct 261 ms 22136 KB Output is correct
76 Correct 258 ms 22136 KB Output is correct
77 Correct 254 ms 22136 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 384 KB Output is correct
80 Correct 5 ms 768 KB Output is correct
81 Correct 116 ms 12280 KB Output is correct
82 Correct 1 ms 384 KB Output is correct
83 Correct 1 ms 384 KB Output is correct
84 Correct 1 ms 384 KB Output is correct
85 Correct 64 ms 5752 KB Output is correct
86 Correct 113 ms 12152 KB Output is correct
87 Correct 109 ms 12152 KB Output is correct
88 Correct 118 ms 12152 KB Output is correct
89 Correct 110 ms 12280 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 384 KB Output is correct
92 Correct 5 ms 896 KB Output is correct
93 Correct 113 ms 12152 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 28 ms 3320 KB Output is correct
98 Correct 114 ms 12152 KB Output is correct
99 Correct 107 ms 12152 KB Output is correct
100 Correct 110 ms 12152 KB Output is correct
101 Correct 108 ms 12280 KB Output is correct
102 Correct 113 ms 12152 KB Output is correct
103 Correct 109 ms 12152 KB Output is correct
104 Correct 113 ms 12152 KB Output is correct
105 Correct 113 ms 12152 KB Output is correct