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답안 #541194

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
541194 2022-03-22T16:58:51 Z Jomnoi Crossing (JOI21_crossing) C++17
100 / 100
 222 ms 14288 KB 
#include <bits/stdc++.h>
#define DEBUG 0
using namespace std;

const int N = 2e5 + 10;
const int P = 31;
const int MOD = 1e9 + 7;

string pat = "JOI";
long long bn[N], qs[N];

long long get_hash(string s) {
    long long H = 0;
    int n = s.length();
    for(int i = 0; i < n; i++) {
        H = (H * P + s[i]) % MOD;
    }
    return H;
}

string crossing(string s, string t) {
    string res = "";
    int n = s.length();
    for(int i = 0; i < n; i++) {
        if(s[i] == t[i]) {
            res += s[i];
            continue;
        }
        
        for(int j = 0; j < 3; j++) {
            if(s[i] != pat[j] and t[i] != pat[j]) {
                res += pat[j];
                break;
            }
        }
    }
    return res;
}

class SegmentTree {
private :
    long long tree[4 * N];
    char lazy[4 * N];
public :
    long long merge(long long L, long long R, int l, int r) {
        int mid = (l + r) / 2;

        long long res = (L * bn[r - mid + 1] + R) % MOD;
        return res;
    }

    void build(int idx, int l, int r) {
        lazy[idx] = '*';
        if(l == r) {
            char t0;
            cin >> t0;
            tree[idx] = t0;
            return;
        }

        int mid = (l + r) / 2;
        build(idx * 2, l, mid);
        build(idx * 2 + 1, mid + 1, r);
        tree[idx] = merge(tree[idx * 2], tree[idx * 2 + 1], l, r);
    }  

    void push(int idx, int l, int r) {
        if(lazy[idx] == '*') {
            return;
        }

        tree[idx] = (qs[r - l + 1] * lazy[idx]) % MOD;
        if(l != r) {
            lazy[idx * 2] = lazy[idx * 2 + 1] = lazy[idx];
        }
        lazy[idx] = '*';
    }

    void update(int idx, int l, int r, int ql, int qr, char c) {
        push(idx, l, r);
        if(r < ql or qr < l) {
            return;
        }
        if(ql <= l and r <= qr) {
            lazy[idx] = c;
            push(idx, l, r);
            return;
        }

        int mid = (l + r) / 2;
        update(idx * 2, l, mid, ql, qr, c);
        update(idx * 2 + 1, mid + 1, r, ql, qr, c);
        tree[idx] = merge(tree[idx * 2], tree[idx * 2 + 1], l, r);
    }

    long long get_ans() {
        return tree[1];
    }

    void print(int idx, int l, int r) {
        push(idx, l, r);
        cout << l << " - " << r << " : " << tree[idx] << '\n';
        if(l == r) {
            return;
        }

        int mid = (l + r) / 2;
        print(idx * 2, l, mid);
        print(idx * 2 + 1, mid + 1, r);
    }
}ST;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    bn[1] = 1;
    qs[1] = 1;
    for(int i = 2; i <= n; i++) {
        bn[i] = (bn[i - 1] * P) % MOD;
        qs[i] = (qs[i - 1] + bn[i]) % MOD;
    }

    string s[6];
    cin >> s[0] >> s[1] >> s[2];

    set <long long> Hash;
    for(int i = 0; i < 3; i++) {
        Hash.insert(get_hash(s[i]));

        if(DEBUG) {
            cout << s[i] << ' ' << get_hash(s[i]) << '\n';
        }
    }

    for(int i = 0; i < 3; i++) {
        for(int j = i + 1; j < 3; j++) {
            s[2 + i + j] = crossing(s[i], s[j]);

            if(DEBUG) {
                cout << s[2 + i + j] << ' ' << get_hash(s[2 + i + j]) << '\n';
            }
            Hash.insert(get_hash(s[2 + i + j]));
        }
    }
    for(int i = 3; i < 6; i++) {
        for(int j = i + 1; j < 6; j++) {
            if(DEBUG) {
                cout << crossing(s[i], s[j]) << ' ' << get_hash(crossing(s[i], s[j])) << '\n';
            }

            Hash.insert(get_hash(crossing(s[i], s[j])));
        }
    }

    int q;
    cin >> q;

    ST.build(1, 0, n - 1); // input string t0

    if(DEBUG) {
        ST.print(1, 0, n - 1);
        cout << ST.get_ans() << " : ";
    }

    if(Hash.count(ST.get_ans())) {
        cout << "Yes\n";
    }
    else {
        cout << "No\n";
    }

    while(q--) {
        int l, r;
        char c;
        cin >> l >> r >> c;
        ST.update(1, 0, n - 1, l - 1, r - 1, c);

        if(DEBUG) {
            ST.print(1, 0, n - 1);
            cout << ST.get_ans() << " : ";
        }

        if(Hash.count(ST.get_ans())) {
            cout << "Yes\n";
        }
        else {
            cout << "No\n";
        }
    }
    return 0;
}

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 2368 KB Output is correct
2 Correct 72 ms 2408 KB Output is correct
3 Correct 69 ms 2308 KB Output is correct
4 Correct 60 ms 2384 KB Output is correct
5 Correct 61 ms 2272 KB Output is correct
6 Correct 62 ms 2288 KB Output is correct
7 Correct 62 ms 2408 KB Output is correct
8 Correct 61 ms 2436 KB Output is correct
9 Correct 62 ms 2392 KB Output is correct
10 Correct 63 ms 2380 KB Output is correct
11 Correct 64 ms 2484 KB Output is correct
12 Correct 65 ms 2380 KB Output is correct
13 Correct 66 ms 2380 KB Output is correct
14 Correct 66 ms 2376 KB Output is correct
15 Correct 64 ms 2464 KB Output is correct
16 Correct 63 ms 2428 KB Output is correct
17 Correct 65 ms 2360 KB Output is correct
18 Correct 63 ms 2340 KB Output is correct

Subtask #2
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 2368 KB Output is correct
2 Correct 72 ms 2408 KB Output is correct
3 Correct 69 ms 2308 KB Output is correct
4 Correct 60 ms 2384 KB Output is correct
5 Correct 61 ms 2272 KB Output is correct
6 Correct 62 ms 2288 KB Output is correct
7 Correct 62 ms 2408 KB Output is correct
8 Correct 61 ms 2436 KB Output is correct
9 Correct 62 ms 2392 KB Output is correct
10 Correct 63 ms 2380 KB Output is correct
11 Correct 64 ms 2484 KB Output is correct
12 Correct 65 ms 2380 KB Output is correct
13 Correct 66 ms 2380 KB Output is correct
14 Correct 66 ms 2376 KB Output is correct
15 Correct 64 ms 2464 KB Output is correct
16 Correct 63 ms 2428 KB Output is correct
17 Correct 65 ms 2360 KB Output is correct
18 Correct 63 ms 2340 KB Output is correct
19 Correct 204 ms 14288 KB Output is correct
20 Correct 202 ms 13892 KB Output is correct
21 Correct 145 ms 13440 KB Output is correct
22 Correct 137 ms 12844 KB Output is correct
23 Correct 96 ms 3784 KB Output is correct
24 Correct 102 ms 3808 KB Output is correct
25 Correct 151 ms 14072 KB Output is correct
26 Correct 165 ms 14040 KB Output is correct
27 Correct 168 ms 14012 KB Output is correct
28 Correct 168 ms 14004 KB Output is correct
29 Correct 170 ms 13944 KB Output is correct
30 Correct 109 ms 3800 KB Output is correct
31 Correct 165 ms 14032 KB Output is correct
32 Correct 158 ms 13464 KB Output is correct
33 Correct 104 ms 3716 KB Output is correct
34 Correct 168 ms 14080 KB Output is correct
35 Correct 130 ms 12348 KB Output is correct
36 Correct 105 ms 3752 KB Output is correct
37 Correct 98 ms 3824 KB Output is correct
38 Correct 175 ms 13820 KB Output is correct
39 Correct 128 ms 14056 KB Output is correct
40 Correct 137 ms 9796 KB Output is correct
41 Correct 213 ms 14148 KB Output is correct
42 Correct 61 ms 13436 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 2368 KB Output is correct
2 Correct 72 ms 2408 KB Output is correct
3 Correct 69 ms 2308 KB Output is correct
4 Correct 60 ms 2384 KB Output is correct
5 Correct 61 ms 2272 KB Output is correct
6 Correct 62 ms 2288 KB Output is correct
7 Correct 62 ms 2408 KB Output is correct
8 Correct 61 ms 2436 KB Output is correct
9 Correct 62 ms 2392 KB Output is correct
10 Correct 63 ms 2380 KB Output is correct
11 Correct 64 ms 2484 KB Output is correct
12 Correct 65 ms 2380 KB Output is correct
13 Correct 66 ms 2380 KB Output is correct
14 Correct 66 ms 2376 KB Output is correct
15 Correct 64 ms 2464 KB Output is correct
16 Correct 63 ms 2428 KB Output is correct
17 Correct 65 ms 2360 KB Output is correct
18 Correct 63 ms 2340 KB Output is correct
19 Correct 75 ms 2540 KB Output is correct
20 Correct 73 ms 2340 KB Output is correct
21 Correct 67 ms 2356 KB Output is correct
22 Correct 58 ms 2220 KB Output is correct
23 Correct 65 ms 2372 KB Output is correct
24 Correct 64 ms 2376 KB Output is correct
25 Correct 66 ms 2400 KB Output is correct
26 Correct 65 ms 2380 KB Output is correct
27 Correct 66 ms 2400 KB Output is correct
28 Correct 58 ms 2252 KB Output is correct
29 Correct 68 ms 2432 KB Output is correct
30 Correct 57 ms 2252 KB Output is correct
31 Correct 66 ms 2388 KB Output is correct
32 Correct 65 ms 2348 KB Output is correct
33 Correct 67 ms 2380 KB Output is correct
34 Correct 65 ms 2220 KB Output is correct
35 Correct 66 ms 2376 KB Output is correct
36 Correct 68 ms 2420 KB Output is correct
37 Correct 67 ms 2468 KB Output is correct
38 Correct 70 ms 2360 KB Output is correct
39 Correct 72 ms 2488 KB Output is correct
40 Correct 68 ms 2368 KB Output is correct
41 Correct 69 ms 2356 KB Output is correct
42 Correct 69 ms 2380 KB Output is correct
43 Correct 62 ms 2312 KB Output is correct
44 Correct 69 ms 2448 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 2368 KB Output is correct
2 Correct 72 ms 2408 KB Output is correct
3 Correct 69 ms 2308 KB Output is correct
4 Correct 60 ms 2384 KB Output is correct
5 Correct 61 ms 2272 KB Output is correct
6 Correct 62 ms 2288 KB Output is correct
7 Correct 62 ms 2408 KB Output is correct
8 Correct 61 ms 2436 KB Output is correct
9 Correct 62 ms 2392 KB Output is correct
10 Correct 63 ms 2380 KB Output is correct
11 Correct 64 ms 2484 KB Output is correct
12 Correct 65 ms 2380 KB Output is correct
13 Correct 66 ms 2380 KB Output is correct
14 Correct 66 ms 2376 KB Output is correct
15 Correct 64 ms 2464 KB Output is correct
16 Correct 63 ms 2428 KB Output is correct
17 Correct 65 ms 2360 KB Output is correct
18 Correct 63 ms 2340 KB Output is correct
19 Correct 204 ms 14288 KB Output is correct
20 Correct 202 ms 13892 KB Output is correct
21 Correct 145 ms 13440 KB Output is correct
22 Correct 137 ms 12844 KB Output is correct
23 Correct 96 ms 3784 KB Output is correct
24 Correct 102 ms 3808 KB Output is correct
25 Correct 151 ms 14072 KB Output is correct
26 Correct 165 ms 14040 KB Output is correct
27 Correct 168 ms 14012 KB Output is correct
28 Correct 168 ms 14004 KB Output is correct
29 Correct 170 ms 13944 KB Output is correct
30 Correct 109 ms 3800 KB Output is correct
31 Correct 165 ms 14032 KB Output is correct
32 Correct 158 ms 13464 KB Output is correct
33 Correct 104 ms 3716 KB Output is correct
34 Correct 168 ms 14080 KB Output is correct
35 Correct 130 ms 12348 KB Output is correct
36 Correct 105 ms 3752 KB Output is correct
37 Correct 98 ms 3824 KB Output is correct
38 Correct 175 ms 13820 KB Output is correct
39 Correct 128 ms 14056 KB Output is correct
40 Correct 137 ms 9796 KB Output is correct
41 Correct 213 ms 14148 KB Output is correct
42 Correct 61 ms 13436 KB Output is correct
43 Correct 75 ms 2540 KB Output is correct
44 Correct 73 ms 2340 KB Output is correct
45 Correct 67 ms 2356 KB Output is correct
46 Correct 58 ms 2220 KB Output is correct
47 Correct 65 ms 2372 KB Output is correct
48 Correct 64 ms 2376 KB Output is correct
49 Correct 66 ms 2400 KB Output is correct
50 Correct 65 ms 2380 KB Output is correct
51 Correct 66 ms 2400 KB Output is correct
52 Correct 58 ms 2252 KB Output is correct
53 Correct 68 ms 2432 KB Output is correct
54 Correct 57 ms 2252 KB Output is correct
55 Correct 66 ms 2388 KB Output is correct
56 Correct 65 ms 2348 KB Output is correct
57 Correct 67 ms 2380 KB Output is correct
58 Correct 65 ms 2220 KB Output is correct
59 Correct 66 ms 2376 KB Output is correct
60 Correct 68 ms 2420 KB Output is correct
61 Correct 67 ms 2468 KB Output is correct
62 Correct 70 ms 2360 KB Output is correct
63 Correct 72 ms 2488 KB Output is correct
64 Correct 68 ms 2368 KB Output is correct
65 Correct 69 ms 2356 KB Output is correct
66 Correct 69 ms 2380 KB Output is correct
67 Correct 62 ms 2312 KB Output is correct
68 Correct 69 ms 2448 KB Output is correct
69 Correct 197 ms 12748 KB Output is correct
70 Correct 222 ms 13948 KB Output is correct
71 Correct 105 ms 3832 KB Output is correct
72 Correct 101 ms 3872 KB Output is correct
73 Correct 117 ms 3788 KB Output is correct
74 Correct 149 ms 12772 KB Output is correct
75 Correct 100 ms 3836 KB Output is correct
76 Correct 166 ms 14016 KB Output is correct
77 Correct 160 ms 12960 KB Output is correct
78 Correct 105 ms 3892 KB Output is correct
79 Correct 102 ms 3788 KB Output is correct
80 Correct 145 ms 12084 KB Output is correct
81 Correct 102 ms 3840 KB Output is correct
82 Correct 169 ms 14156 KB Output is correct
83 Correct 158 ms 13576 KB Output is correct
84 Correct 102 ms 3788 KB Output is correct
85 Correct 103 ms 3848 KB Output is correct
86 Correct 170 ms 12468 KB Output is correct
87 Correct 172 ms 14072 KB Output is correct
88 Correct 108 ms 3776 KB Output is correct
89 Correct 168 ms 13248 KB Output is correct
90 Correct 177 ms 14060 KB Output is correct
91 Correct 112 ms 3788 KB Output is correct
92 Correct 149 ms 12388 KB Output is correct
93 Correct 103 ms 3744 KB Output is correct
94 Correct 107 ms 3820 KB Output is correct
95 Correct 103 ms 3752 KB Output is correct
96 Correct 181 ms 13896 KB Output is correct
97 Correct 134 ms 14040 KB Output is correct
98 Correct 151 ms 9752 KB Output is correct
99 Correct 222 ms 14200 KB Output is correct
100 Correct 74 ms 13432 KB Output is correct