oj.uz

Submission #886842

# Submission time Handle Problem Language Result Execution time Memory
886842 2023-12-13T03:41:33 Z socho Snake Escaping (JOI18_snake_escaping) C++17
22 / 100
 856 ms 65536 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef double D;
typedef vector<int> VI;
typedef set<int> SI;
typedef map<int, int> MII;
typedef pair<int, int> PII;

#define A first
#define B second
#define SZ(x) int(x.size())
#define PB push_back
#define FR(i, a, b) for (int i = (a); i < (b); i++)
#define FOR(i, n) FR(i, 0, n)
#define RF(i, a, b) for (int i = (a); i >= (b); i--)
#define FRA(a, x) for (auto a: (x))

template <typename T> inline void set_min(T &a, T b) {if(b < a) a = b;}
template <typename T> inline void set_max(T &a, T b) {if(b > a) a = b;}

int n, q;
string s;
const int MXN = 20;
int dp[MXN][1<<MXN];
int dp2[MXN][1<<MXN];
int val[1<<MXN];

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	
	cin >> n >> q;
	cin >> s;
	
	FOR(i, 1<<n) {
		val[i] = (s[i] - '0');
	}
	
	FOR(b, n) {
		FOR(i, 1<<n) {
			if (b == 0) {
				dp[b][i] = ((i & (1 << b)) > 0 ? val[i] + val[i ^ (1<<b)] : val[i]);
				dp2[b][i] = ((i & (1 << b)) == 0 ? val[i] + val[i ^ (1<<b)] : val[i]);
			}
			else {
				dp[b][i] = ((i & (1 << b)) > 0 ? dp[b-1][i] + dp[b-1][i ^ (1<<b)] : dp[b-1][i]);
				dp2[b][i] = ((i & (1 << b)) == 0 ? dp2[b-1][i] + dp2[b-1][i ^ (1<<b)] : dp2[b-1][i]);
			}
		}
	}
	
	FOR(_, q) {
		string s;
		cin >> s;
		reverse(s.begin(), s.end());
		
		int n0 = 0, n1 = 0, nq = 0;
		FRA(x, s) {
			if (x == '?') nq++;
			else if (x == '0') n0++;
			else n1++;
		}
		
		int ans = 0;
		if (nq <= 6) {
			// just add over the bitmasks
			int main = 0;
			VI ms;
			FOR(i, n) {
				if (s[i] == '?') ms.PB(i);
				else if (s[i] == '1') main += (1 << i);
			}
			FOR(i, 1<<nq) {
				int p = main;
				FOR(j, nq) {
					if (i & (1 << j)) p += (1 << ms[j]);
				}
				ans += val[p];
			}
		}
		else if (n0 <= 6) {
			// 0011??
			// super(001100)
			// -super(011100)
			// -super(101100)
			// +super(111100)
			VI ms;
			int main = 0;
			FOR(i, n) {
				if (s[i] == '0') ms.PB(i);
				else if (s[i] == '1') main += (1 << i);
			}
			FOR(i, 1<<n0) {
				int p = main;
				FOR(j, n0) {
					if (i & (1 << j)) {
						p += (1 << ms[j]);
					}
				}
				if (__builtin_popcount(i) % 2 == 0) ans += dp2[n-1][p];
				else ans -= dp2[n-1][p];
			}
		}
		else { // n1 <= 6
			// 0011??
			// sub(001111)
			// -sub(001011)
			// -sub(000111)
			// +sub(000011)
			VI ms;
			int main = 0;
			FOR(i, n) {
				if (s[i] == '1') ms.PB(i);
				else if (s[i] == '?') main += (1 << i);
			}
			FOR(i, 1<<n1) {
				int p = main;
				FOR(j, n1) {
					if (i & (1 << j)) p += (1 << ms[j]);
				}
				if ((n1 - __builtin_popcount(i)) % 2 == 0) ans += dp[n-1][p];
				else ans -= dp[n-1][p];
			}
		}
		cout << ans << '\n';
		
	}
	
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41308 KB Output is correct
2 Correct 5 ms 41308 KB Output is correct
3 Correct 5 ms 41308 KB Output is correct
4 Correct 5 ms 41308 KB Output is correct
5 Correct 5 ms 41308 KB Output is correct
6 Correct 5 ms 41308 KB Output is correct
7 Correct 5 ms 41304 KB Output is correct
8 Correct 5 ms 41308 KB Output is correct
9 Correct 5 ms 41308 KB Output is correct
10 Correct 5 ms 41304 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41308 KB Output is correct
2 Correct 5 ms 41308 KB Output is correct
3 Correct 5 ms 41308 KB Output is correct
4 Correct 5 ms 41308 KB Output is correct
5 Correct 5 ms 41308 KB Output is correct
6 Correct 5 ms 41308 KB Output is correct
7 Correct 5 ms 41304 KB Output is correct
8 Correct 5 ms 41308 KB Output is correct
9 Correct 5 ms 41308 KB Output is correct
10 Correct 5 ms 41304 KB Output is correct
11 Correct 471 ms 56140 KB Output is correct
12 Correct 509 ms 55888 KB Output is correct
13 Correct 345 ms 54944 KB Output is correct
14 Correct 353 ms 55352 KB Output is correct
15 Correct 785 ms 56264 KB Output is correct
16 Correct 430 ms 55600 KB Output is correct
17 Correct 421 ms 55320 KB Output is correct
18 Correct 161 ms 57172 KB Output is correct
19 Correct 175 ms 54220 KB Output is correct
20 Correct 466 ms 55888 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41308 KB Output is correct
2 Correct 5 ms 41308 KB Output is correct
3 Correct 5 ms 41308 KB Output is correct
4 Correct 5 ms 41308 KB Output is correct
5 Correct 5 ms 41308 KB Output is correct
6 Correct 5 ms 41308 KB Output is correct
7 Correct 5 ms 41304 KB Output is correct
8 Correct 5 ms 41308 KB Output is correct
9 Correct 5 ms 41308 KB Output is correct
10 Correct 5 ms 41304 KB Output is correct
11 Correct 471 ms 56140 KB Output is correct
12 Correct 509 ms 55888 KB Output is correct
13 Correct 345 ms 54944 KB Output is correct
14 Correct 353 ms 55352 KB Output is correct
15 Correct 785 ms 56264 KB Output is correct
16 Correct 430 ms 55600 KB Output is correct
17 Correct 421 ms 55320 KB Output is correct
18 Correct 161 ms 57172 KB Output is correct
19 Correct 175 ms 54220 KB Output is correct
20 Correct 466 ms 55888 KB Output is correct
21 Correct 232 ms 65536 KB Output is correct
22 Correct 769 ms 65536 KB Output is correct
23 Correct 479 ms 65536 KB Output is correct
24 Correct 447 ms 65536 KB Output is correct
25 Correct 410 ms 65536 KB Output is correct
26 Correct 564 ms 65536 KB Output is correct
27 Correct 539 ms 65536 KB Output is correct
28 Correct 183 ms 65536 KB Output is correct
29 Correct 208 ms 65536 KB Output is correct
30 Correct 455 ms 65536 KB Output is correct
31 Correct 856 ms 65536 KB Output is correct
32 Correct 578 ms 65536 KB Output is correct
33 Correct 356 ms 65536 KB Output is correct
34 Correct 439 ms 65536 KB Output is correct
35 Correct 534 ms 65536 KB Output is correct
36 Correct 156 ms 65536 KB Output is correct
37 Correct 828 ms 65536 KB Output is correct
38 Correct 228 ms 65536 KB Output is correct
39 Correct 455 ms 65536 KB Output is correct
40 Correct 432 ms 65536 KB Output is correct

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41308 KB Output is correct
2 Correct 5 ms 41308 KB Output is correct
3 Correct 5 ms 41308 KB Output is correct
4 Correct 5 ms 41308 KB Output is correct
5 Correct 5 ms 41308 KB Output is correct
6 Correct 5 ms 41308 KB Output is correct
7 Correct 5 ms 41304 KB Output is correct
8 Correct 5 ms 41308 KB Output is correct
9 Correct 5 ms 41308 KB Output is correct
10 Correct 5 ms 41304 KB Output is correct
11 Runtime error 30 ms 65536 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 41308 KB Output is correct
2 Correct 5 ms 41308 KB Output is correct
3 Correct 5 ms 41308 KB Output is correct
4 Correct 5 ms 41308 KB Output is correct
5 Correct 5 ms 41308 KB Output is correct
6 Correct 5 ms 41308 KB Output is correct
7 Correct 5 ms 41304 KB Output is correct
8 Correct 5 ms 41308 KB Output is correct
9 Correct 5 ms 41308 KB Output is correct
10 Correct 5 ms 41304 KB Output is correct
11 Correct 471 ms 56140 KB Output is correct
12 Correct 509 ms 55888 KB Output is correct
13 Correct 345 ms 54944 KB Output is correct
14 Correct 353 ms 55352 KB Output is correct
15 Correct 785 ms 56264 KB Output is correct
16 Correct 430 ms 55600 KB Output is correct
17 Correct 421 ms 55320 KB Output is correct
18 Correct 161 ms 57172 KB Output is correct
19 Correct 175 ms 54220 KB Output is correct
20 Correct 466 ms 55888 KB Output is correct
21 Correct 232 ms 65536 KB Output is correct
22 Correct 769 ms 65536 KB Output is correct
23 Correct 479 ms 65536 KB Output is correct
24 Correct 447 ms 65536 KB Output is correct
25 Correct 410 ms 65536 KB Output is correct
26 Correct 564 ms 65536 KB Output is correct
27 Correct 539 ms 65536 KB Output is correct
28 Correct 183 ms 65536 KB Output is correct
29 Correct 208 ms 65536 KB Output is correct
30 Correct 455 ms 65536 KB Output is correct
31 Correct 856 ms 65536 KB Output is correct
32 Correct 578 ms 65536 KB Output is correct
33 Correct 356 ms 65536 KB Output is correct
34 Correct 439 ms 65536 KB Output is correct
35 Correct 534 ms 65536 KB Output is correct
36 Correct 156 ms 65536 KB Output is correct
37 Correct 828 ms 65536 KB Output is correct
38 Correct 228 ms 65536 KB Output is correct
39 Correct 455 ms 65536 KB Output is correct
40 Correct 432 ms 65536 KB Output is correct
41 Runtime error 30 ms 65536 KB Execution killed with signal 9
42 Halted 0 ms 0 KB -