oj.uz

답안 #1042478

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1042478 2024-08-03T05:15:18 Z Alihan_8 디지털 회로 (IOI22_circuit) C++17
0 / 100
 433 ms 4964 KB 
#include "circuit.h"

#include <vector>

#include <bits/stdc++.h>

using namespace std;

#define ar array
#define pb push_back
#define ln '\n'

const int Mod = 1000002022;

vector <int> a, fa;

vector <vector<int>> adj;

vector <ar<int,2>> dp;

int n, m;

template <class F, class S>
void add(F &x, const S &y){
	x = (x + 0LL + y) % Mod;
	
	if ( x < 0 ) x += Mod; 
}

void init(int N, int M, std::vector<int> P, std::vector<int> A) {
	a = A, n = N, m = M, fa = P;
	
	adj.resize(n + m);
	
	for ( int i = 1; i < n + m; i++ ){
		adj[P[i]].pb(i);
	}
	
	vector <int> s(n + m);
	
	dp.resize(n + m);
	
	auto dfs = [&](auto dfs, int u) -> void{
		if ( u >= n ){
			dp[u][1] = a[u - n];
			dp[u][0] = a[u - n] ^ 1;
			
			return;
		}
		
		for ( auto &v: adj[u] ){
			dfs(dfs, v);
			
			s[u] += 1;
		}
		
		vector <int> f(s[u] + 1);
		
		f[0] = 1;
		
		for ( auto &v: adj[u] ){
			vector <int> nxt(s[u] + 1);
			
			for ( int j = 0; j <= s[u]; j++ ){
				add(nxt[j], f[j] * 1LL * dp[v][0] % Mod);
				
				if ( j > 0 ){
					add(nxt[j], f[j - 1] * 1LL * dp[v][1] % Mod);
				}
			}
			
			swap(f, nxt);
		}
		
		for ( int i = 0; i <= s[u]; i++ ){
			add(dp[u][1], i * 1LL * f[i] % Mod);
			add(dp[u][0], (s[u] - i) * 1LL * f[i] % Mod);
		}
	};
	
	dfs(dfs, 0);
}

int count_ways(int L, int R) {
	L -= n, R -= n;
	
	assert(L == R);
	
	for ( int i = L; i <= R; i++ ){
		a[i] ^= 1;
	}
	
	int u = L;
	
	while ( u != -1 ){
		if ( u >= n ){
			dp[u][1] = a[u - n];
			dp[u][0] = a[u - n] ^ 1;
		} else{		
			int s = (int)adj[u].size();
			
			vector <int> f(s + 1);
			
			f[0] = 1;
			
			for ( auto &v: adj[u] ){
				vector <int> nxt(s + 1);
				
				for ( int j = 0; j <= s; j++ ){
					add(nxt[j], f[j] * 1LL * dp[v][0] % Mod);
					
					if ( j > 0 ){
						add(nxt[j], f[j - 1] * 1LL * dp[v][1] % Mod);
					}
				}
				
				swap(f, nxt);
			}
			
			dp[u] = {0, 0};
			
			for ( int i = 0; i <= s; i++ ){
				add(dp[u][1], i * 1LL * f[i] % Mod);
				add(dp[u][0], (s - i) * 1LL * f[i] % Mod);
			}
		}
		
		u = fa[u];
	}
		
	return dp[0][1];
}

Subtask #1
0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 0 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 433 ms 4964 KB 1st lines differ - on the 1st token, expected: '431985922', found: '394586018'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 433 ms 4964 KB 1st lines differ - on the 1st token, expected: '431985922', found: '394586018'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 0 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #8
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -