oj.uz

Submission #303263

# Submission time Handle Problem Language Result Execution time Memory
303263 2020-09-20T06:46:44 Z Utaha Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 266 ms 26232 KB 
#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
// typedef long double ld;

#define F first
#define S second
#define ALL(a) a.begin(),a.end()
#define SZ(a) ((int)a.size())
#define REP(i,n) for(int i=0;i<(n);i++)
#define MP make_pair
#define pb push_back
#define eb emplace_back
const int maxn = 1005;
const int INF = 0x3f3f3f3f;
const ll INF64 = 1e18;
const ll MOD = ll(1e9+7);


int n;
vector<int> cmp;
bool vis[maxn];
std::vector<std::vector<int>> ans;
std::vector<std::vector<int>> p;

void dfs(int u){
	vis[u]=1;
	cmp.pb(u);
	REP(v,n) if(v!=u&&p[u][v]&&!vis[v]){
		dfs(v);
	}
}	

vector<int> _;
bool vis2[maxn];

void dfs2(int u){
	vis2[u]=1;
	_.pb(u);
	REP(v,n) if(v!=u&&p[u][v]==1&&!vis2[v]){
		dfs2(v);
	}
}


void add(int x,int y){
	ans[x][y]=ans[y][x]=1;
}

bool process(){
	// cout<<"process: ";
	// for(int i:cmp){
		// cout<<i<<' ';
	// }
	// cout<<'\n';
	int cnt2 = SZ(cmp) * SZ(cmp);
	for(int i:cmp) vis2[i] = 0;

	vector<int> ring;

	for(int i:cmp) if(!vis2[i]){
		_.clear();
		dfs2(i);
		// for(int j:_){
			// cout<<j<<' ';
		// }
		// cout<<endl;

		for(int x:_) for(int y:_){
			if(p[x][y]!=1) return 0;
		}
		REP(i,SZ(_)-1){
			add(_[i],_[i+1]);
		}
		ring.pb(_[0]);
		cnt2 -= SZ(_) * SZ(_);
	}
	if(SZ(ring)==2){
		return 0;
	}
	if(SZ(ring)>2){
		ring.pb(ring[0]);
		REP(i,SZ(ring)-1){
			add(ring[i],ring[i+1]);
		}
	}

	for(int x:cmp) for(int y:cmp) if(p[x][y]==2){
		cnt2--;
	}
	if(cnt2!=0) return 0;

	return 1;
}

int construct(std::vector<std::vector<int>> A) {
	p=A;
	n = p.size();
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		ans.push_back(row);
	}
	int cnt0 = n*n;
	REP(i,n) REP(j,n) if(p[i][j]==3) return 0;
	bool flag = 1;
	REP(i,n) if(!vis[i]){
		cmp.clear();
		dfs(i);
		flag &= process();
		if(!flag) return 0;
		cnt0 -= SZ(cmp) * SZ(cmp);
	}
	REP(i,n) REP(j,n) if(p[i][j]==0) cnt0--;
	if(cnt0!=0) return 0;
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 10 ms 1408 KB Output is correct
7 Correct 245 ms 26104 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 10 ms 1408 KB Output is correct
7 Correct 245 ms 26104 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 255 ms 25976 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 129 ms 16120 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 245 ms 26104 KB Output is correct
22 Correct 244 ms 25976 KB Output is correct
23 Correct 250 ms 26108 KB Output is correct
24 Correct 243 ms 26104 KB Output is correct
25 Correct 107 ms 16120 KB Output is correct
26 Correct 126 ms 16248 KB Output is correct
27 Correct 248 ms 26104 KB Output is correct
28 Correct 244 ms 26092 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 10 ms 1408 KB Output is correct
9 Correct 240 ms 26112 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 239 ms 26104 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 8 ms 1024 KB Output is correct
17 Correct 126 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 60 ms 6776 KB Output is correct
22 Correct 250 ms 26104 KB Output is correct
23 Correct 240 ms 26136 KB Output is correct
24 Correct 248 ms 26108 KB Output is correct
25 Correct 105 ms 16120 KB Output is correct
26 Correct 138 ms 16120 KB Output is correct
27 Correct 242 ms 25980 KB Output is correct
28 Correct 250 ms 26104 KB Output is correct
29 Correct 105 ms 16120 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 60 ms 6776 KB Output is correct
5 Correct 266 ms 25976 KB Output is correct
6 Correct 243 ms 25976 KB Output is correct
7 Correct 257 ms 26232 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 60 ms 6776 KB Output is correct
10 Correct 246 ms 26104 KB Output is correct
11 Correct 251 ms 26140 KB Output is correct
12 Correct 245 ms 26104 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 61 ms 6904 KB Output is correct
17 Correct 241 ms 26104 KB Output is correct
18 Correct 247 ms 26104 KB Output is correct
19 Correct 242 ms 25976 KB Output is correct
20 Correct 238 ms 26104 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 10 ms 1408 KB Output is correct
7 Correct 245 ms 26104 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 255 ms 25976 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 129 ms 16120 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 245 ms 26104 KB Output is correct
22 Correct 244 ms 25976 KB Output is correct
23 Correct 250 ms 26108 KB Output is correct
24 Correct 243 ms 26104 KB Output is correct
25 Correct 107 ms 16120 KB Output is correct
26 Correct 126 ms 16248 KB Output is correct
27 Correct 248 ms 26104 KB Output is correct
28 Correct 244 ms 26092 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 240 ms 26112 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 10 ms 1408 KB Output is correct
41 Correct 239 ms 26104 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 8 ms 1024 KB Output is correct
45 Correct 126 ms 16120 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 60 ms 6776 KB Output is correct
50 Correct 250 ms 26104 KB Output is correct
51 Correct 240 ms 26136 KB Output is correct
52 Correct 248 ms 26108 KB Output is correct
53 Correct 105 ms 16120 KB Output is correct
54 Correct 138 ms 16120 KB Output is correct
55 Correct 242 ms 25980 KB Output is correct
56 Correct 250 ms 26104 KB Output is correct
57 Correct 105 ms 16120 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 8 ms 1024 KB Output is correct
61 Correct 123 ms 16120 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 0 ms 256 KB Output is correct
64 Correct 0 ms 256 KB Output is correct
65 Correct 60 ms 6776 KB Output is correct
66 Correct 102 ms 16120 KB Output is correct
67 Correct 106 ms 16120 KB Output is correct
68 Correct 102 ms 16120 KB Output is correct
69 Correct 110 ms 16120 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 10 ms 1408 KB Output is correct
7 Correct 245 ms 26104 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 255 ms 25976 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 129 ms 16120 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 60 ms 6776 KB Output is correct
21 Correct 245 ms 26104 KB Output is correct
22 Correct 244 ms 25976 KB Output is correct
23 Correct 250 ms 26108 KB Output is correct
24 Correct 243 ms 26104 KB Output is correct
25 Correct 107 ms 16120 KB Output is correct
26 Correct 126 ms 16248 KB Output is correct
27 Correct 248 ms 26104 KB Output is correct
28 Correct 244 ms 26092 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1408 KB Output is correct
37 Correct 240 ms 26112 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 10 ms 1408 KB Output is correct
41 Correct 239 ms 26104 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 8 ms 1024 KB Output is correct
45 Correct 126 ms 16120 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 60 ms 6776 KB Output is correct
50 Correct 250 ms 26104 KB Output is correct
51 Correct 240 ms 26136 KB Output is correct
52 Correct 248 ms 26108 KB Output is correct
53 Correct 105 ms 16120 KB Output is correct
54 Correct 138 ms 16120 KB Output is correct
55 Correct 242 ms 25980 KB Output is correct
56 Correct 250 ms 26104 KB Output is correct
57 Correct 105 ms 16120 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 0 ms 256 KB Output is correct
61 Correct 60 ms 6776 KB Output is correct
62 Correct 266 ms 25976 KB Output is correct
63 Correct 243 ms 25976 KB Output is correct
64 Correct 257 ms 26232 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 60 ms 6776 KB Output is correct
67 Correct 246 ms 26104 KB Output is correct
68 Correct 251 ms 26140 KB Output is correct
69 Correct 245 ms 26104 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 0 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 61 ms 6904 KB Output is correct
74 Correct 241 ms 26104 KB Output is correct
75 Correct 247 ms 26104 KB Output is correct
76 Correct 242 ms 25976 KB Output is correct
77 Correct 238 ms 26104 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 0 ms 256 KB Output is correct
80 Correct 8 ms 1024 KB Output is correct
81 Correct 123 ms 16120 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 0 ms 256 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 60 ms 6776 KB Output is correct
86 Correct 102 ms 16120 KB Output is correct
87 Correct 106 ms 16120 KB Output is correct
88 Correct 102 ms 16120 KB Output is correct
89 Correct 110 ms 16120 KB Output is correct
90 Correct 0 ms 256 KB Output is correct
91 Correct 0 ms 256 KB Output is correct
92 Correct 5 ms 1024 KB Output is correct
93 Correct 104 ms 16120 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 0 ms 256 KB Output is correct
96 Correct 0 ms 256 KB Output is correct
97 Correct 26 ms 4344 KB Output is correct
98 Correct 107 ms 16248 KB Output is correct
99 Correct 102 ms 16120 KB Output is correct
100 Correct 101 ms 16124 KB Output is correct
101 Correct 103 ms 16084 KB Output is correct
102 Correct 104 ms 16120 KB Output is correct
103 Correct 103 ms 16092 KB Output is correct
104 Correct 105 ms 16152 KB Output is correct
105 Correct 105 ms 16120 KB Output is correct