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Submission #339554

# Submission time Handle Problem Language Result Execution time Memory
339554 2020-12-25T15:51:08 Z Alex_tz307 Walk (POI13_spa) C++17
100 / 100
 3644 ms 54172 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int N, K;
ll x, y;
unordered_set<ll> forbidden;

bool graphSearch(ll s, ll d, int cnt) {
    unordered_set<ll> vis;
    queue<ll> Q;
    Q.emplace(s);
    vis.insert(s);
    --cnt;
    while(!Q.empty()) {
        ll v = Q.front();
        Q.pop();
        for(int i = 0; i < N; ++i) {
            ll next = v ^ (1LL << i);
            if(next == d)
                return true;
            if(!forbidden.count(next) && !vis.count(next)) {
                --cnt;
                if(cnt == 0)
                    return true;
                Q.emplace(next);
                vis.insert(next);
            }
        }
    }
    return false;
}

bool solve(ll s, ll d) {
    int bound = 1e6;
    bool a = graphSearch(s, d, bound),
         b = graphSearch(d, s, bound);
    return a && b;
}

ll readBin() {
    string s;
    cin >> s;
    ll nr = 0;
    for(int i = N - 1; i >= 0; --i)
        if(s[i] == '1')
            nr += (1LL << (N - i - 1));
    return nr;
}

void read() {
    cin >> N >> K;
    x = readBin(), y = readBin();
    for(int i = 0; i < K; ++i) {
        ll a;
        a = readBin();
        forbidden.insert(a);
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    read();
    if(solve(x, y))
        cout << "TAK";
    else
        cout << "NIE";
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 3 ms 492 KB Output is correct
4 Correct 19 ms 1004 KB Output is correct
5 Correct 10 ms 1004 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 109 ms 9396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 10676 KB Output is correct
2 Correct 2100 ms 51444 KB Output is correct
3 Correct 3644 ms 51856 KB Output is correct
4 Correct 2045 ms 53748 KB Output is correct
5 Correct 2104 ms 53876 KB Output is correct
6 Correct 45 ms 9616 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1128 ms 46576 KB Output is correct
3 Correct 2227 ms 47024 KB Output is correct
4 Correct 2248 ms 46748 KB Output is correct
5 Correct 1031 ms 46576 KB Output is correct
6 Correct 1956 ms 51996 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 492 KB Output is correct
2 Correct 947 ms 47600 KB Output is correct
3 Correct 1998 ms 51868 KB Output is correct
4 Correct 1999 ms 51956 KB Output is correct
5 Correct 966 ms 47728 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 5264 KB Output is correct
2 Correct 1453 ms 51572 KB Output is correct
3 Correct 2750 ms 52320 KB Output is correct
4 Correct 2151 ms 49900 KB Output is correct
5 Correct 1039 ms 49776 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 4492 KB Output is correct
2 Correct 1064 ms 48720 KB Output is correct
3 Correct 2043 ms 52852 KB Output is correct
4 Correct 2326 ms 54172 KB Output is correct
5 Correct 1221 ms 50416 KB Output is correct

Subtask #7
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 140 ms 8884 KB Output is correct
2 Correct 1839 ms 52980 KB Output is correct
3 Correct 3235 ms 53392 KB Output is correct
4 Correct 3113 ms 50484 KB Output is correct
5 Correct 1545 ms 50420 KB Output is correct

Subtask #8
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 8664 KB Output is correct
2 Correct 1376 ms 48664 KB Output is correct
3 Correct 2747 ms 48928 KB Output is correct
4 Correct 89 ms 7312 KB Output is correct
5 Correct 1542 ms 52004 KB Output is correct