oj.uz

답안 #999234

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
999234 2024-06-15T08:33:27 Z pan 슈퍼트리 잇기 (IOI20_supertrees) C++17
21 / 100
 128 ms 30036 KB 
#include <bits/stdc++.h>
//#include "bits_stdc++.h"
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define endl '\n'
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define input(x) scanf("%lld", &x);
#define input2(x, y) scanf("%lld%lld", &x, &y);
#define input3(x, y, z) scanf("%lld%lld%lld", &x, &y, &z);
#define input4(x, y, z, a) scanf("%lld%lld%lld%lld", &x, &y, &z, &a);
#define print(x, y) printf("%lld%c", x, y);
#define show(x) cerr << #x << " is " << x << endl;
#define show2(x,y) cerr << #x << " is " << x << " " << #y << " is " << y << endl;
#define show3(x,y,z) cerr << #x << " is " << x << " " << #y << " is " << y << " " << #z << " is " << z << endl;
#define all(x) x.begin(), x.end()
#define discretize(x) sort(x.begin(), x.end()); x.erase(unique(x.begin(), x.end()), x.end());
#define FOR(i, x, n) for (ll i =x; i<=n; ++i) 
#define RFOR(i, x, n) for (ll i =x; i>=n; --i) 
using namespace std;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());
//using namespace __gnu_pbds;
//#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
//#define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
typedef long long ll;
typedef long double ld;
typedef pair<ld, ll> pd;
typedef pair<string, ll> psl;
typedef pair<ll, ll> pi;
typedef pair<pi, ll> pii;
typedef pair<pi, pi> piii;

ll par[1005];
ll find(ll x) {return ((par[x]==x)?x:par[x] = find(par[x]));}
void unite(ll x, ll y){if ((x=find(x))!=(y=find(y))) par[x] = y;}

vector<ll> compress;
ll adj[1005][1005];
bool visited[1005];

void build(std::vector<std::vector<int> > b);
int construct(std::vector<std::vector<int> > p)
{
	ll n = p.size();
	vector<vector<int> > ret(n, vector<int> (n, 0));
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (p[i][j]==3) return 0;
	for (ll i=0; i<n; ++i) par[i] = i;
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (p[i][j]!=0) unite(i, j);
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (find(i)==find(j) && p[i][j]==0) return 0;
	for (ll i=0; i<n; ++i) par[i] = i;
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (p[i][j]==1) unite(i, j);
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (find(i)==find(j) && p[i][j]!=1) return 0;
	compress.clear();
	for (ll i=0; i<n; ++i) 
	{
		//show2(i, find(i));
		if (find(i)==i) compress.pb(i);
		else ret[i][find(i)] = ret[find(i)][i] = 1;
	}
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) adj[i][j] = 0;
	for (ll i=0; i<n; ++i) for (ll j=0; j<n; ++j) if (p[i][j]==2) adj[find(i)][find(j)] = adj[find(j)][find(i)] = 1;
	for (ll i=0; i<n; ++i) par[i] = i;
	for (ll u: compress) for (ll u2: compress) {if (adj[u][u2]==1) unite(u, u2);}
	for (ll u: compress) for (ll u2: compress) if (u!=u2 && find(u)==find(u2) && adj[u][u2]!=1) return 0;
	fill(visited,visited+n, 0);
	for (ll u: compress)
	{
		if (visited[u]) continue;
		vector<ll> q;
		q.pb(u);
		for (ll i=0; i<q.size(); ++i)
		{
			ll now = q[i];
			for (ll u: compress) if (!visited[u] && adj[now][u]) {visited[u] = 1; q.pb(u);}
		}
		if (q.size()==2) return 0;
		if (q.size()>1)
		{
			ret[q[0]][q.back()] = ret[q.back()][q[0]] = 1;
			for (ll i=0; i<q.size()-1; ++i) ret[q[i]][q[i+1]] = ret[q[i+1]][q[i]] = 1;
		}
	}
	build(ret);
	return 1;
	
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:75:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |   for (ll i=0; i<q.size(); ++i)
      |                ~^~~~~~~~~
supertrees.cpp:84:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |    for (ll i=0; i<q.size()-1; ++i) ret[q[i]][q[i+1]] = ret[q[i+1]][q[i]] = 1;
      |                 ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 3416 KB Output is correct
7 Correct 121 ms 29956 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 3416 KB Output is correct
7 Correct 121 ms 29956 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 3420 KB Output is correct
13 Correct 121 ms 30036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 62 ms 12068 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 9956 KB Output is correct
21 Correct 123 ms 29948 KB Output is correct
22 Correct 118 ms 30032 KB Output is correct
23 Correct 127 ms 30036 KB Output is correct
24 Correct 122 ms 30036 KB Output is correct
25 Correct 49 ms 12112 KB Output is correct
26 Correct 47 ms 12120 KB Output is correct
27 Correct 128 ms 29968 KB Output is correct
28 Correct 120 ms 30036 KB Output is correct

Subtask #3
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB b[0][0] is not 0
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 3416 KB Output is correct
7 Correct 121 ms 29956 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 3420 KB Output is correct
13 Correct 121 ms 30036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 62 ms 12068 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 9956 KB Output is correct
21 Correct 123 ms 29948 KB Output is correct
22 Correct 118 ms 30032 KB Output is correct
23 Correct 127 ms 30036 KB Output is correct
24 Correct 122 ms 30036 KB Output is correct
25 Correct 49 ms 12112 KB Output is correct
26 Correct 47 ms 12120 KB Output is correct
27 Correct 128 ms 29968 KB Output is correct
28 Correct 120 ms 30036 KB Output is correct
29 Correct 0 ms 600 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 3416 KB Output is correct
7 Correct 121 ms 29956 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 3420 KB Output is correct
13 Correct 121 ms 30036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 62 ms 12068 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 9956 KB Output is correct
21 Correct 123 ms 29948 KB Output is correct
22 Correct 118 ms 30032 KB Output is correct
23 Correct 127 ms 30036 KB Output is correct
24 Correct 122 ms 30036 KB Output is correct
25 Correct 49 ms 12112 KB Output is correct
26 Correct 47 ms 12120 KB Output is correct
27 Correct 128 ms 29968 KB Output is correct
28 Correct 120 ms 30036 KB Output is correct
29 Correct 0 ms 600 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -