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Submission #576444

# Submission time Handle Problem Language Result Execution time Memory
576444 2022-06-13T06:14:44 Z amunduzbaev L-triominoes (CEOI21_ltriominoes) C++17
0 / 100
 848 ms 524288 KB 
#include "bits/stdc++.h"
using namespace std;
 
#define ar array

const int N = 15;
const int M = 1005;
int dp[M][N][1 << N];
int is[N][M];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, m, k; cin>>n>>m>>k;
	vector<int> x(k), y(k);
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			is[i][j] = 1;
		}
	} 
	for(int i=0;i<k;i++){
		cin>>x[i]>>y[i]; x[i]--, y[i]--;
		is[x[i]][y[i]] = 0;
	}
	
	int ch[4][2] = {
		{0, 0},
		{-1, 0},
		{-1, 1},
		{0, 1}
	};
	int P[4] = {1, 0, -1, 0}, mas[4] = {14, 13, 11, 7};
	int mask = (!is[0][1]);
	for(int i=0;i<n;i++){
		if(!is[i][0]) mask |= (1 << (i + 1));
	}
	
	dp[0][1][mask] = 1;
	for(int i=0;i+1<m;i++){
		for(int j=1;j<n;j++){
			for(int mask=0;mask < (1 << (n + 1));mask++){
				if(!dp[i][j][mask]) continue;
				int us = 0;
				for(int t=0;t<4;t++){
					us |= (is[j + ch[t][0]][i + ch[t][1]] & (t < 3 ? !(mask >> (j + P[t]) & 1) : 1)) << t;
				}
				
				for(int t=0;t<4;t++){
					if((us & mas[t]) != mas[t]) continue;
					int m2 = mask;
					for(int l=0;l<4;l++){
						if(mas[t] >> l & 1){
							//~ assert(!(m2 >> (j + P[l]) & 1));
							m2 |= (1 << (j + P[l]));
						}
					}
					if(t == 1 && !(mask >> j & 1)) continue;
					if(t == 3){
						m2 ^= (1 << j);
						m2 |= (!is[j][i + 1]) << j;
					}
					
					if(j + 1 < n){
						dp[i][j + 1][m2] = 1;
					} else if(m2 >> n & 1) {
						m2 ^= (1 << n);
						m2 = m2 << 1 | (!is[0][i + 2]);
						dp[i + 1][1][m2] = 1;
					}
				}
				
				if(mask >> j & 1){
					int m2 = mask;
					if(j + 1 < n){
						m2 ^= (1 << j);
						m2 |= (!is[j][i+1]) << j;
						dp[i][j + 1][m2] = 1;
					} else if(m2 >> n & 1) {
						m2 ^= (1 << j) ^ (1 << n);
						m2 |= (!is[j][i+1]) << j;
						m2 = m2 << 1 | (!is[0][i + 2]);
						dp[i + 1][1][m2] = 1;
					}
				}
			}
		}
	}
	
	if(dp[m-1][1][(1 << (n + 1)) - 1]) cout<<"YES\n";
	else cout<<"NO\n";
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8020 KB Output is correct
2 Correct 4 ms 8452 KB Output is correct
3 Correct 4 ms 8532 KB Output is correct
4 Correct 6 ms 12372 KB Output is correct
5 Correct 5 ms 12372 KB Output is correct
6 Correct 9 ms 19992 KB Output is correct
7 Correct 1 ms 1108 KB Output is correct
8 Correct 72 ms 38744 KB Output is correct
9 Correct 5 ms 724 KB Output is correct
10 Correct 8 ms 6996 KB Output is correct
11 Correct 140 ms 79180 KB Output is correct
12 Correct 8 ms 3028 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 7 ms 7172 KB Output is correct
16 Runtime error 848 ms 524288 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 223 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 232 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 174 ms 204364 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Runtime error 243 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8020 KB Output is correct
2 Correct 4 ms 8452 KB Output is correct
3 Correct 4 ms 8532 KB Output is correct
4 Correct 6 ms 12372 KB Output is correct
5 Correct 5 ms 12372 KB Output is correct
6 Correct 9 ms 19992 KB Output is correct
7 Correct 1 ms 1108 KB Output is correct
8 Correct 72 ms 38744 KB Output is correct
9 Correct 5 ms 724 KB Output is correct
10 Correct 8 ms 6996 KB Output is correct
11 Correct 140 ms 79180 KB Output is correct
12 Correct 8 ms 3028 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 7 ms 7172 KB Output is correct
16 Runtime error 848 ms 524288 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -