oj.uz

Submission #887147

# Submission time Handle Problem Language Result Execution time Memory
887147 2023-12-13T21:35:14 Z box Crossing (JOI21_crossing) C++17
26 / 100
 7000 ms 5916 KB 
#include <bits/stdc++.h>
using namespace std;

#define sz(v) int(std::size(v))
using i64 = long long;

const int N = 2e5, P1 = 1e9 + 7, P2 = 1e9 + 9;

string operator+(string one, const string two) {
    static char all = 'J' ^ 'O' ^ 'I';
    for (int i = 0; i < sz(one); i++)
        one[i] = one[i] == two[i] ? one[i] : (one[i] ^ two[i] ^ all);
    return one;
}

i64 hsh(const string s) {
    i64 one = 0, two = 0;
    for (char c : s) {
        int i = c == 'J' ? 0 : c == 'O' ? 1 : 2;
        one = (one * 3 + i) % P1;
        two = (two * 3 + i) % P2;
    }
    return one * P2 + two;
}

mt19937 rng(1234);

string gen(int n) {
    string s(n, '?');
    for (int i = 0; i < n; i++) s[i] = "JOI"[rng() % 3];
    return s;
}

int n, q;
vector<string> v;
unordered_set<i64> s;

void expand() {
    for (string t : v) s.insert(hsh(t));
    while (1) {
        int m = sz(v);
        for (int i = 0; i < m; i++) for (int j = i + 1; j < m; j++) {
            string t = v[i] + v[j];
            i64 h = hsh(t);
            if (!s.count(h)) {
                s.insert(h);
                v.push_back(t);
            }
        }
        if (sz(v) == m) break;
    }
}

bool qry(const string t) {
    for (string s : v) if (t == s) return true;
    return false;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n;
    for (int rep = 0; rep < 3; rep++) {
        string s;
        cin >> s;
        v.push_back(s);
    }
    expand();
    cin >> q;
    string t;
    cin >> t;
    cout << (qry(t) ? "Yes\n" : "No\n");
    while (q--) {
        int l, r; char c;
        cin >> l >> r >> c, l--, r--;
        for (int i = l; i <= r; i++) t[i] = c;
        cout << (qry(t) ? "Yes\n" : "No\n");
    }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 848 KB Output is correct
2 Correct 63 ms 1188 KB Output is correct
3 Correct 67 ms 796 KB Output is correct
4 Correct 55 ms 852 KB Output is correct
5 Correct 52 ms 896 KB Output is correct
6 Correct 50 ms 860 KB Output is correct
7 Correct 63 ms 1100 KB Output is correct
8 Correct 53 ms 1040 KB Output is correct
9 Correct 54 ms 996 KB Output is correct
10 Correct 53 ms 848 KB Output is correct
11 Correct 68 ms 2364 KB Output is correct
12 Correct 55 ms 2560 KB Output is correct
13 Correct 56 ms 2392 KB Output is correct
14 Correct 54 ms 2568 KB Output is correct
15 Correct 69 ms 2528 KB Output is correct
16 Correct 59 ms 2384 KB Output is correct
17 Correct 67 ms 2492 KB Output is correct
18 Correct 64 ms 2380 KB Output is correct

Subtask #2
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 848 KB Output is correct
2 Correct 63 ms 1188 KB Output is correct
3 Correct 67 ms 796 KB Output is correct
4 Correct 55 ms 852 KB Output is correct
5 Correct 52 ms 896 KB Output is correct
6 Correct 50 ms 860 KB Output is correct
7 Correct 63 ms 1100 KB Output is correct
8 Correct 53 ms 1040 KB Output is correct
9 Correct 54 ms 996 KB Output is correct
10 Correct 53 ms 848 KB Output is correct
11 Correct 68 ms 2364 KB Output is correct
12 Correct 55 ms 2560 KB Output is correct
13 Correct 56 ms 2392 KB Output is correct
14 Correct 54 ms 2568 KB Output is correct
15 Correct 69 ms 2528 KB Output is correct
16 Correct 59 ms 2384 KB Output is correct
17 Correct 67 ms 2492 KB Output is correct
18 Correct 64 ms 2380 KB Output is correct
19 Execution timed out 7094 ms 5916 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 848 KB Output is correct
2 Correct 63 ms 1188 KB Output is correct
3 Correct 67 ms 796 KB Output is correct
4 Correct 55 ms 852 KB Output is correct
5 Correct 52 ms 896 KB Output is correct
6 Correct 50 ms 860 KB Output is correct
7 Correct 63 ms 1100 KB Output is correct
8 Correct 53 ms 1040 KB Output is correct
9 Correct 54 ms 996 KB Output is correct
10 Correct 53 ms 848 KB Output is correct
11 Correct 68 ms 2364 KB Output is correct
12 Correct 55 ms 2560 KB Output is correct
13 Correct 56 ms 2392 KB Output is correct
14 Correct 54 ms 2568 KB Output is correct
15 Correct 69 ms 2528 KB Output is correct
16 Correct 59 ms 2384 KB Output is correct
17 Correct 67 ms 2492 KB Output is correct
18 Correct 64 ms 2380 KB Output is correct
19 Correct 94 ms 2256 KB Output is correct
20 Correct 109 ms 2276 KB Output is correct
21 Correct 60 ms 2388 KB Output is correct
22 Correct 55 ms 2420 KB Output is correct
23 Correct 60 ms 2472 KB Output is correct
24 Correct 63 ms 2464 KB Output is correct
25 Correct 61 ms 2524 KB Output is correct
26 Correct 61 ms 2412 KB Output is correct
27 Correct 53 ms 2380 KB Output is correct
28 Correct 53 ms 2132 KB Output is correct
29 Correct 60 ms 2564 KB Output is correct
30 Correct 49 ms 2388 KB Output is correct
31 Correct 88 ms 2388 KB Output is correct
32 Correct 83 ms 2372 KB Output is correct
33 Correct 85 ms 2372 KB Output is correct
34 Correct 79 ms 2424 KB Output is correct
35 Correct 86 ms 2384 KB Output is correct
36 Correct 91 ms 2352 KB Output is correct
37 Correct 86 ms 2384 KB Output is correct
38 Correct 86 ms 2500 KB Output is correct
39 Correct 86 ms 2576 KB Output is correct
40 Correct 107 ms 2384 KB Output is correct
41 Correct 85 ms 2344 KB Output is correct
42 Correct 94 ms 2388 KB Output is correct
43 Correct 83 ms 2388 KB Output is correct
44 Correct 84 ms 2388 KB Output is correct

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 848 KB Output is correct
2 Correct 63 ms 1188 KB Output is correct
3 Correct 67 ms 796 KB Output is correct
4 Correct 55 ms 852 KB Output is correct
5 Correct 52 ms 896 KB Output is correct
6 Correct 50 ms 860 KB Output is correct
7 Correct 63 ms 1100 KB Output is correct
8 Correct 53 ms 1040 KB Output is correct
9 Correct 54 ms 996 KB Output is correct
10 Correct 53 ms 848 KB Output is correct
11 Correct 68 ms 2364 KB Output is correct
12 Correct 55 ms 2560 KB Output is correct
13 Correct 56 ms 2392 KB Output is correct
14 Correct 54 ms 2568 KB Output is correct
15 Correct 69 ms 2528 KB Output is correct
16 Correct 59 ms 2384 KB Output is correct
17 Correct 67 ms 2492 KB Output is correct
18 Correct 64 ms 2380 KB Output is correct
19 Execution timed out 7094 ms 5916 KB Time limit exceeded
20 Halted 0 ms 0 KB -