oj.uz

Submission #673412

# Submission time Handle Problem Language Result Execution time Memory
673412 2022-12-20T14:55:15 Z stevancv Snake Escaping (JOI18_snake_escaping) C++14
0 / 100
 1 ms 340 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e6 + 2;
const int mod = 1e9 + 7;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, q;
    cin >> n >> q;
    int m = 1 << n;
    string s; cin >> s;
    vector<int> sum(m);
    for (int i = 0; i < m; i++) sum[i] = s[i] - '0';
    for (int j = 0; j < n; j++) {
        for (int i = 0; i < m; i++) {
            if ((1 << j) & i) sum[i] += sum[i ^ (1 << j)];
        }
    }
    while (q--) {
        string t; cin >> t;
        reverse(t.begin(), t.end());
        int x = 0, y = 0, z = 0;
        for (int i = 0; i < n; i++) {
            if (t[i] == '1') x += 1 << i;
            if (t[i] == '0') y += 1 << i;
            if (t[i] == '?') z += 1 << i;
        }
        int xx = __builtin_popcount(x);
        if (xx <= 6) {
            int ans = 0;
            for (int smask = x; ; smask = (smask - 1) & x) {
                if ((xx - __builtin_popcount(smask)) & 1) ans -= sum[smask | z];
                else ans += sum[smask | z];
                if (smask == 0) break;
            }
            cout << ans << en;
            continue;
        }
        int yy = __builtin_popcount(x);
        if (yy <= 6) {
            for (int i = 0; i < n; i++) {
                if (t[i] == '0') t[i] = '1';
                else if (t[i] == '1') t[i] = '0';
            }
            swap(x, y); swap(xx, yy);
            int ans = 0;
            for (int smask = x; ; smask = (smask - 1) & x) {
                if ((xx - __builtin_popcount(smask)) & 1) ans -= sum[smask | z];
                else ans += sum[smask | z];
                if (smask == 0) break;
            }
            cout << sum[m - 1] - ans << en;
            continue;
        }
        int ans = 0;
        for (int smask = z; ; smask = (smask - 1) & x) {
            ans += sum[smask | x];
            if (smask == 0) break;
        }
        cout << ans << en;
    }
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 272 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 272 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 272 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 272 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Incorrect 1 ms 272 KB Output isn't correct
7 Halted 0 ms 0 KB -