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Submission #576450

# Submission time Handle Problem Language Result Execution time Memory
576450 2022-06-13T06:18:10 Z amunduzbaev L-triominoes (CEOI21_ltriominoes) C++17
10 / 100
 1281 ms 8276 KB 
#include "bits/stdc++.h"
using namespace std;
 
#define ar array

const int N = 15;
const int M = 1005;
int dp[2][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++){
		int c = i&1;
		memset(dp[!c], 0, sizeof dp[!c]);
		for(int j=1;j<n;j++){
			for(int mask=0;mask < (1 << (n + 1));mask++){
				if(!dp[c][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[c][j + 1][m2] = 1;
					} else if(m2 >> n & 1) {
						m2 ^= (1 << n);
						m2 = m2 << 1 | (!is[0][i + 2]);
						dp[!c][1][m2] = 1;
					}
				}
				
				if(mask >> j & 1){
					int m2 = mask;
					if(j + 1 < n){
						m2 ^= (1 << j);
						m2 |= (!is[j][i+1]) << j;
						dp[c][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[!c][1][m2] = 1;
					}
				}
			}
		}
	}
	
	if(dp[(m-1)&1][1][(1 << (n + 1)) - 1]) cout<<"YES\n";
	else cout<<"NO\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 4152 KB Output is correct
2 Correct 33 ms 4052 KB Output is correct
3 Correct 34 ms 4184 KB Output is correct
4 Correct 48 ms 4180 KB Output is correct
5 Correct 41 ms 4172 KB Output is correct
6 Correct 47 ms 4180 KB Output is correct
7 Correct 3 ms 4180 KB Output is correct
8 Correct 65 ms 4224 KB Output is correct
9 Correct 10 ms 4180 KB Output is correct
10 Correct 11 ms 4180 KB Output is correct
11 Correct 148 ms 4188 KB Output is correct
12 Correct 15 ms 4168 KB Output is correct
13 Correct 2 ms 4180 KB Output is correct
14 Correct 3 ms 4180 KB Output is correct
15 Correct 7 ms 4208 KB Output is correct
16 Correct 1182 ms 4200 KB Output is correct
17 Correct 170 ms 4192 KB Output is correct
18 Correct 583 ms 4200 KB Output is correct
19 Correct 58 ms 4180 KB Output is correct
20 Correct 1134 ms 4204 KB Output is correct
21 Correct 600 ms 4196 KB Output is correct
22 Correct 49 ms 4180 KB Output is correct
23 Correct 59 ms 4180 KB Output is correct
24 Correct 50 ms 4168 KB Output is correct
25 Correct 1281 ms 4204 KB Output is correct
26 Correct 1259 ms 4212 KB Output is correct
27 Correct 46 ms 4180 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 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 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 4152 KB Output is correct
2 Correct 33 ms 4052 KB Output is correct
3 Correct 34 ms 4184 KB Output is correct
4 Correct 48 ms 4180 KB Output is correct
5 Correct 41 ms 4172 KB Output is correct
6 Correct 47 ms 4180 KB Output is correct
7 Correct 3 ms 4180 KB Output is correct
8 Correct 65 ms 4224 KB Output is correct
9 Correct 10 ms 4180 KB Output is correct
10 Correct 11 ms 4180 KB Output is correct
11 Correct 148 ms 4188 KB Output is correct
12 Correct 15 ms 4168 KB Output is correct
13 Correct 2 ms 4180 KB Output is correct
14 Correct 3 ms 4180 KB Output is correct
15 Correct 7 ms 4208 KB Output is correct
16 Correct 1182 ms 4200 KB Output is correct
17 Correct 170 ms 4192 KB Output is correct
18 Correct 583 ms 4200 KB Output is correct
19 Correct 58 ms 4180 KB Output is correct
20 Correct 1134 ms 4204 KB Output is correct
21 Correct 600 ms 4196 KB Output is correct
22 Correct 49 ms 4180 KB Output is correct
23 Correct 59 ms 4180 KB Output is correct
24 Correct 50 ms 4168 KB Output is correct
25 Correct 1281 ms 4204 KB Output is correct
26 Correct 1259 ms 4212 KB Output is correct
27 Correct 46 ms 4180 KB Output is correct
28 Runtime error 6 ms 8276 KB Execution killed with signal 11
29 Halted 0 ms 0 KB -