oj.uz

Submission #334761

# Submission time Handle Problem Language Result Execution time Memory
334761 2020-12-10T00:55:09 Z HoneyBadger Snake Escaping (JOI18_snake_escaping) C++17
12 / 100
 158 ms 17004 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 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());

inline int readChar();
inline int readInt();
inline void writeInt(int x, char end = 0);
inline void writeChar(int x);


static const int buf_size = 4096;

inline int getChar() {
    static char buf[buf_size];
    static int len = 0, pos = 0;
    if (pos == len)
        pos = 0, len = fread(buf, 1, buf_size, stdin);
    if (pos == len)
        return -1;
    return buf[pos++];
}

inline int readChar() {
    int c = getChar();
    while (c <= 32)
        c = getChar();
    return c;
}

inline int readInt() {
    int c = readChar();
    int x = 0;
    while ('0' <= c && c <= '9')
        x = x * 10 + c - '0', c = getChar();
    return x;
}


static int write_pos = 0;
static char write_buf[buf_size];

inline void writeChar(int x) {
    if (write_pos == buf_size)
        fwrite(write_buf, 1, buf_size, stdout), write_pos = 0;
    write_buf[write_pos++] = x;
}

inline void writeInt(int x, char end) {
    char s[4];
    int n = 0;
    while (x || !n)
        s[n++] = '0' + x % 10, x /= 10;
    while (n--)
        writeChar(s[n]);
    if (end)
        writeChar(end);
}


struct Flusher {
    ~Flusher() {
        if (write_pos)
            fwrite(write_buf, 1, write_pos, stdout), write_pos = 0;
    }
} flusher;


 
int n, q;
int a[MX];
int sos1[MX];
int sos0[MX];
int bits[MX];
 
void calc() {
    for (int mask = 0; mask < (1 << n); ++mask) {
        sos1[mask] = a[mask];
        sos0[mask] = a[mask];
        bits[mask] = bits[mask >> 1] + (mask & 1);
    }
    for (int i = 0; i < n; ++i) {
        for (int 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, int 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, int 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, int 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);
 
    n = readInt(), q = readInt();
    for (int i = 0; i < (1 << n); ++i) {
        a[i] = readChar() - '0';
    }
 
    calc();
    s = string(n, '0');
    while (q--) {
        int pq = 0, p1 = 0, p0 = 0;
        fx(c, s) {
            c = readChar();
            pq += c == '?';
            p1 += c == '1';
            p0 += c == '0';
        }
        ans = 0;
        if (pq <= p1 && pq <= p0) {
            solveq();
        } else if (p1 <= pq && p1 <= p0) {
            solve1();
        } else {    
            solve0();
        }
        writeInt(ans, '\n');
    }
}

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 364 KB Output is correct
3 Correct 1 ms 492 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 492 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 364 KB Output is correct
3 Correct 1 ms 492 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 492 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 77 ms 4588 KB Output is correct
12 Correct 82 ms 4076 KB Output is correct
13 Correct 114 ms 3308 KB Output is correct
14 Correct 144 ms 3436 KB Output is correct
15 Correct 105 ms 4460 KB Output is correct
16 Correct 158 ms 3564 KB Output is correct
17 Correct 138 ms 3564 KB Output is correct
18 Correct 81 ms 5484 KB Output is correct
19 Correct 62 ms 2412 KB Output is correct
20 Correct 79 ms 4076 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 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 492 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 77 ms 4588 KB Output is correct
12 Correct 82 ms 4076 KB Output is correct
13 Correct 114 ms 3308 KB Output is correct
14 Correct 144 ms 3436 KB Output is correct
15 Correct 105 ms 4460 KB Output is correct
16 Correct 158 ms 3564 KB Output is correct
17 Correct 138 ms 3564 KB Output is correct
18 Correct 81 ms 5484 KB Output is correct
19 Correct 62 ms 2412 KB Output is correct
20 Correct 79 ms 4076 KB Output is correct
21 Correct 92 ms 4588 KB Output is correct
22 Incorrect 102 ms 4668 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 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 492 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 42 ms 17004 KB Output is correct
12 Incorrect 47 ms 17004 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 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 492 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 77 ms 4588 KB Output is correct
12 Correct 82 ms 4076 KB Output is correct
13 Correct 114 ms 3308 KB Output is correct
14 Correct 144 ms 3436 KB Output is correct
15 Correct 105 ms 4460 KB Output is correct
16 Correct 158 ms 3564 KB Output is correct
17 Correct 138 ms 3564 KB Output is correct
18 Correct 81 ms 5484 KB Output is correct
19 Correct 62 ms 2412 KB Output is correct
20 Correct 79 ms 4076 KB Output is correct
21 Correct 92 ms 4588 KB Output is correct
22 Incorrect 102 ms 4668 KB Output isn't correct
23 Halted 0 ms 0 KB -