oj.uz

Submission #294688

# Submission time Handle Problem Language Result Execution time Memory
294688 2020-09-09T08:29:02 Z _7_7_ Split the Attractions (IOI19_split) C++14
0 / 100
 117 ms 15096 KB 
#include "split.h"
#include <bits/stdc++.h>                                           
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
//#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define fastio ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;  
typedef unsigned long long ull;         
typedef vector < pii > vpii;                                   	
typedef vector < int > vi;
typedef long double ldb;  
typedef long long ll;  
typedef double db;
 
typedef tree < int, null_type, less < int >, rb_tree_tag, tree_order_statistics_node_update > ordered_set;
 
const int inf = 1e9, maxn = 2e5 + 48, mod = 998244353, N = 1e5 + 112;
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 300;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const db eps = 1e-12, pi = acos(-1);
const ll INF = 1e18;

using namespace std;

int n, m, cnt[N], tin[N], tout[N], timer;
pair < int, pii > T;
vi g[N], res;

void dfs (int v) {
	tin[v] = ++timer;
	cnt[v] = 1;
	for (auto to : g[v])
		if (!cnt[to]) {
			dfs(to);   
			cnt[v] += cnt[to];
		}

	tout[v] = timer;
}


bool upper (int v, int u) {
	return tin[v] <= tin[u] && tout[u] <= tout[v];
}


bool check (int v) {
	if ((!T.s.s && upper(T.s.f, v)) || (T.s.s && upper(v, T.s.f)))
		return 0;
	return 1;
}

void dfs1 (int v, int c, int &x) {
	if (!x)
		return;

	--x;			
	res[v] = c;
	for (auto to : g[v])
		if (check(to) && !res[to]) 
			dfs1(to, c, x);		
}

void dfs2 (int v, int c, int &x) {
	if (!x)
		return;
	--x;
	res[v] = c;
	for (auto to : g[v])
		if (!check(to) && !res[to])
			dfs2(to, c, x);
}



vi find_split(int _n, int a, int b, int c, vi p, vi q) {
	n = _n;
	m = sz(p);
	for (int i = 0; i < m; ++i) {
		g[p[i]].pb(q[i]);
		g[q[i]].pb(p[i]);
	}
		
	res.resize(n, 0);
	dfs(0);
	
	T = {inf, {inf, inf}};
	
	int A = 1, B = 2, C = 3;
	if (a > b && a > c) {
	    swap(A, C);
		swap(a, c);      
	}
	
	if (b > a && b > c) {
		swap(b, c);      
		swap(B, c);
	}

	if (a > b) {
		swap(a, b);
		swap(A, B);
	}

	for (int i = 0; i < n; ++i) {
		if (cnt[i] >= a)
			T = min(T, mp(cnt[i], mp(i, 0)));
		if (n - cnt[i] >= a)
			T = min(T, mp(n - cnt[i], mp(i, 1)));
	}

	if (n - T.f < b)  
		return res;	
			
	int root = 0;
	while (!check(root))
		++root;
	dfs1(root, B, b);
	dfs2(T.s.f, A, a);
	for (int i = 0; i < n; ++i)
		if (!res[i])
			res[i] = C;

	return res;
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB ok, correct split
2 Correct 2 ms 2688 KB ok, correct split
3 Correct 2 ms 2688 KB ok, correct split
4 Correct 2 ms 2688 KB ok, correct split
5 Correct 2 ms 2688 KB ok, correct split
6 Correct 2 ms 2688 KB ok, correct split
7 Incorrect 110 ms 14896 KB invalid split: #1=38209, #2=33333, #3=28458
8 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB ok, correct split
2 Correct 2 ms 2688 KB ok, correct split
3 Correct 2 ms 2688 KB ok, correct split
4 Correct 117 ms 13688 KB ok, correct split
5 Correct 94 ms 10616 KB ok, correct split
6 Correct 97 ms 15096 KB ok, correct split
7 Incorrect 111 ms 13560 KB answer for 0-th vertex does not belong to {0, 1, 2, 3}
8 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB ok, correct split
2 Incorrect 92 ms 10660 KB invalid split: #1=13, #2=14646, #3=85341
3 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB ok, correct split
2 Correct 2 ms 2688 KB ok, no valid answer
3 Correct 2 ms 2732 KB ok, correct split
4 Correct 2 ms 2688 KB ok, correct split
5 Correct 2 ms 2688 KB ok, correct split
6 Correct 2 ms 2688 KB ok, correct split
7 Correct 2 ms 2688 KB ok, correct split
8 Correct 2 ms 2728 KB ok, correct split
9 Correct 4 ms 2944 KB ok, correct split
10 Incorrect 4 ms 2944 KB answer for 0-th vertex does not belong to {0, 1, 2, 3}
11 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB ok, correct split
2 Correct 2 ms 2688 KB ok, correct split
3 Correct 2 ms 2688 KB ok, correct split
4 Correct 2 ms 2688 KB ok, correct split
5 Correct 2 ms 2688 KB ok, correct split
6 Correct 2 ms 2688 KB ok, correct split
7 Incorrect 110 ms 14896 KB invalid split: #1=38209, #2=33333, #3=28458
8 Halted 0 ms 0 KB -