oj.uz

Submission #334752

# Submission time Handle Problem Language Result Execution time Memory
334752 2020-12-10T00:32:00 Z HoneyBadger Snake Escaping (JOI18_snake_escaping) C++17
75 / 100
 2000 ms 17772 KB 
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <vector>
#include <bitset>
#include <string>
#include <cstring>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <deque>
#include <utility>
#include <algorithm>
#include <random>
#include <cmath>
#include <cassert>
#include <climits>
#include <ctime>
#include <chrono>



#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.1,sse4.2,popcnt,abm,mmx,avx,avx2,tune=native")



#ifdef LOCAL
    #define dbg(x) cout << #x << " : " << x << endl;
#else
    #define dbg(x)
#endif


#define pb push_back
#define ppb pop_back()
#define mp make_pair
#define fi(a, b) for (int i = a; i < b; i++)
#define fj(a, b) for (int j = a; j < b; j++)
#define fk(a, b) for (int k = a; k < b; k++)
#define fi1(a, b) for (int i = a - 1; i >= b; i--)
#define fj1(a, b) for (int j = a - 1; j >= b; j--)
#define fk1(a, b) for (int k = a - 1; k >= b; k--)
#define fx(x, a) for (auto& x : a)
#define rep(i, a, b) for (int i = a; i < b; ++i)
#define rep1(i, a, b) for (int i = a - 1; i >= b; --i)
#define siz(x) (int)x.size()
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

using namespace std;

template<typename T1, typename T2>inline void mine(T1 &x, const T2 &y) { if (y < x) x = y; }
template<typename T1, typename T2>inline void maxe(T1 &x, const T2 &y) { if (x < y) x = y; }

ostream& operator << (ostream &out, const vector<int> &b) {
    for (auto k : b) out << k << ' ';
    return out;
}

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef char ch;
typedef string str;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vpii;
typedef vector<vpii> vvpii;
typedef vector<ch> vch;
typedef vector<vch> vvch;
typedef vector<str> vs;



const int MOD = 1000000007;
const int INF = 1000000050;
const long long BIG = (long long)2e18 + 50;
const int MX = 1 << 20;
const int PW = 20;
const double EPS = 1e-9;


mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());


int n, q;
int a[MX];
int sos1[MX];
int sos0[MX];

void calc() {
    for (unsigned mask = 0; mask < (1 << n); ++mask) {
        sos1[mask] = a[mask];
        sos0[mask] = a[mask];
    }
    for (int i = 0; i < n; ++i) {
        for (unsigned mask = 0; mask < (1 << n); ++mask) {
            if ((mask >> i) & 1) {
                sos1[mask] += sos1[mask ^ (1 << i)];
            } else {
                sos0[mask] += sos0[mask ^ (1 << i)];
            }
        }
    }

}

int ans;
str s;


void solveq(int i = 0, unsigned mask = 0) {
    if (i == n) {
        ans += a[mask];
        return;
    }
    mask <<= 1;
    if (s[i] == '?') {
        solveq(i + 1, mask);
        solveq(i + 1, mask ^ 1);
    } else {
        solveq(i + 1, mask ^ (s[i] == '1'));
    }
}

void solve1(int i = 0, unsigned mask = 0, int del = 0) {
    if (i == n) {
        if (del)
            ans -= sos1[mask];
        else
            ans += sos1[mask];
        return;
    }
    mask <<= 1;
    if (s[i] == '1') {
        solve1(i + 1, mask ^ 1, del);
        solve1(i + 1, mask, del ^ 1);  
    } else {
        solve1(i + 1, mask ^ (s[i] == '?'), del);
    }
}

void solve0(int i = 0, unsigned mask = 0, int del = 0) {
    if (i == n) {
        if (del)
            ans -= sos0[mask];
        else
            ans += sos0[mask];
        return;
    }
    mask <<= 1;
    if (s[i] == '0') {
        solve0(i + 1, mask ^ 1, del ^ 1);
        solve0(i + 1, mask, del);
    } else {
        solve0(i + 1, mask ^ (s[i] != '?'), del);
    }
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> q;
    for (int i = 0; i < (1 << n); ++i) {
        char c;
        cin >> c;
        a[i] = c - '0';
    }

    calc();
    
    while (q--) {
        cin >> s;
        int pq = 0, p1 = 0, p0 = 0;
        fx(c, s) {
            pq += c == '?';
            p1 += c == '1';
            p0 += c == '0';
        }
        ans = 0;
        if (pq <= n / 3) {
            solveq();
        } else if (p1 <= n / 3) {
            solve1();
        } else {    
            solve0();
        }
        cout << ans << '\n';
    }
}

Compilation message

snake_escaping.cpp: In function 'void calc()':
snake_escaping.cpp:98:34: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
   98 |     for (unsigned mask = 0; mask < (1 << n); ++mask) {
      |                             ~~~~~^~~~~~~~~~
snake_escaping.cpp:103:38: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
  103 |         for (unsigned mask = 0; mask < (1 << n); ++mask) {
      |                                 ~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 213 ms 4460 KB Output is correct
12 Correct 236 ms 4332 KB Output is correct
13 Correct 260 ms 3308 KB Output is correct
14 Correct 287 ms 3436 KB Output is correct
15 Correct 266 ms 4460 KB Output is correct
16 Correct 299 ms 3692 KB Output is correct
17 Correct 303 ms 3564 KB Output is correct
18 Correct 220 ms 5356 KB Output is correct
19 Correct 208 ms 2412 KB Output is correct
20 Correct 250 ms 4076 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 213 ms 4460 KB Output is correct
12 Correct 236 ms 4332 KB Output is correct
13 Correct 260 ms 3308 KB Output is correct
14 Correct 287 ms 3436 KB Output is correct
15 Correct 266 ms 4460 KB Output is correct
16 Correct 299 ms 3692 KB Output is correct
17 Correct 303 ms 3564 KB Output is correct
18 Correct 220 ms 5356 KB Output is correct
19 Correct 208 ms 2412 KB Output is correct
20 Correct 250 ms 4076 KB Output is correct
21 Correct 217 ms 4460 KB Output is correct
22 Correct 272 ms 4716 KB Output is correct
23 Correct 371 ms 3692 KB Output is correct
24 Correct 490 ms 3564 KB Output is correct
25 Correct 350 ms 5484 KB Output is correct
26 Correct 473 ms 3948 KB Output is correct
27 Correct 433 ms 3948 KB Output is correct
28 Correct 237 ms 6508 KB Output is correct
29 Correct 220 ms 2540 KB Output is correct
30 Correct 302 ms 4716 KB Output is correct
31 Correct 381 ms 4460 KB Output is correct
32 Correct 511 ms 4588 KB Output is correct
33 Correct 339 ms 3592 KB Output is correct
34 Correct 499 ms 3556 KB Output is correct
35 Correct 432 ms 4076 KB Output is correct
36 Correct 222 ms 2540 KB Output is correct
37 Correct 228 ms 4460 KB Output is correct
38 Correct 226 ms 2540 KB Output is correct
39 Correct 372 ms 3948 KB Output is correct
40 Correct 493 ms 3692 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 61 ms 13036 KB Output is correct
12 Correct 63 ms 12908 KB Output is correct
13 Correct 99 ms 12780 KB Output is correct
14 Correct 146 ms 12908 KB Output is correct
15 Correct 79 ms 13036 KB Output is correct
16 Correct 166 ms 12908 KB Output is correct
17 Correct 147 ms 12928 KB Output is correct
18 Correct 59 ms 13164 KB Output is correct
19 Correct 64 ms 12764 KB Output is correct
20 Correct 71 ms 13036 KB Output is correct
21 Correct 104 ms 12908 KB Output is correct
22 Correct 155 ms 12852 KB Output is correct
23 Correct 79 ms 12780 KB Output is correct
24 Correct 145 ms 12908 KB Output is correct
25 Correct 142 ms 12908 KB Output is correct
26 Correct 57 ms 12780 KB Output is correct
27 Correct 60 ms 12908 KB Output is correct
28 Correct 61 ms 12780 KB Output is correct
29 Correct 101 ms 12908 KB Output is correct
30 Correct 140 ms 12908 KB Output is correct
31 Correct 78 ms 12780 KB Output is correct
32 Correct 162 ms 12908 KB Output is correct
33 Correct 149 ms 12836 KB Output is correct
34 Correct 56 ms 12780 KB Output is correct
35 Correct 116 ms 12908 KB Output is correct
36 Correct 116 ms 12908 KB Output is correct
37 Correct 123 ms 12908 KB Output is correct
38 Correct 121 ms 12908 KB Output is correct
39 Correct 123 ms 12908 KB Output is correct
40 Correct 121 ms 12908 KB Output is correct

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 213 ms 4460 KB Output is correct
12 Correct 236 ms 4332 KB Output is correct
13 Correct 260 ms 3308 KB Output is correct
14 Correct 287 ms 3436 KB Output is correct
15 Correct 266 ms 4460 KB Output is correct
16 Correct 299 ms 3692 KB Output is correct
17 Correct 303 ms 3564 KB Output is correct
18 Correct 220 ms 5356 KB Output is correct
19 Correct 208 ms 2412 KB Output is correct
20 Correct 250 ms 4076 KB Output is correct
21 Correct 217 ms 4460 KB Output is correct
22 Correct 272 ms 4716 KB Output is correct
23 Correct 371 ms 3692 KB Output is correct
24 Correct 490 ms 3564 KB Output is correct
25 Correct 350 ms 5484 KB Output is correct
26 Correct 473 ms 3948 KB Output is correct
27 Correct 433 ms 3948 KB Output is correct
28 Correct 237 ms 6508 KB Output is correct
29 Correct 220 ms 2540 KB Output is correct
30 Correct 302 ms 4716 KB Output is correct
31 Correct 381 ms 4460 KB Output is correct
32 Correct 511 ms 4588 KB Output is correct
33 Correct 339 ms 3592 KB Output is correct
34 Correct 499 ms 3556 KB Output is correct
35 Correct 432 ms 4076 KB Output is correct
36 Correct 222 ms 2540 KB Output is correct
37 Correct 228 ms 4460 KB Output is correct
38 Correct 226 ms 2540 KB Output is correct
39 Correct 372 ms 3948 KB Output is correct
40 Correct 493 ms 3692 KB Output is correct
41 Correct 61 ms 13036 KB Output is correct
42 Correct 63 ms 12908 KB Output is correct
43 Correct 99 ms 12780 KB Output is correct
44 Correct 146 ms 12908 KB Output is correct
45 Correct 79 ms 13036 KB Output is correct
46 Correct 166 ms 12908 KB Output is correct
47 Correct 147 ms 12928 KB Output is correct
48 Correct 59 ms 13164 KB Output is correct
49 Correct 64 ms 12764 KB Output is correct
50 Correct 71 ms 13036 KB Output is correct
51 Correct 104 ms 12908 KB Output is correct
52 Correct 155 ms 12852 KB Output is correct
53 Correct 79 ms 12780 KB Output is correct
54 Correct 145 ms 12908 KB Output is correct
55 Correct 142 ms 12908 KB Output is correct
56 Correct 57 ms 12780 KB Output is correct
57 Correct 60 ms 12908 KB Output is correct
58 Correct 61 ms 12780 KB Output is correct
59 Correct 101 ms 12908 KB Output is correct
60 Correct 140 ms 12908 KB Output is correct
61 Correct 78 ms 12780 KB Output is correct
62 Correct 162 ms 12908 KB Output is correct
63 Correct 149 ms 12836 KB Output is correct
64 Correct 56 ms 12780 KB Output is correct
65 Correct 116 ms 12908 KB Output is correct
66 Correct 116 ms 12908 KB Output is correct
67 Correct 123 ms 12908 KB Output is correct
68 Correct 121 ms 12908 KB Output is correct
69 Correct 123 ms 12908 KB Output is correct
70 Correct 121 ms 12908 KB Output is correct
71 Correct 336 ms 17644 KB Output is correct
72 Correct 454 ms 17772 KB Output is correct
73 Correct 1136 ms 16364 KB Output is correct
74 Execution timed out 2052 ms 16620 KB Time limit exceeded
75 Halted 0 ms 0 KB -