oj.uz

Submission #501672

# Submission time Handle Problem Language Result Execution time Memory
501672 2022-01-04T09:51:12 Z tengiz05 Crossing (JOI21_crossing) C++17
100 / 100
 597 ms 44072 KB 
#include <bits/stdc++.h>

using i64 = long long;

int pre[9][3][200005];

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int n;
    std::cin >> n;
    
    auto in = [&]() {
        std::string a;
        std::cin >> a;
        std::vector<int> b(n);
        for (int i = 0; i < n; i++) {
            b[i] = std::string("JOI").find(a[i]);
        }
        return b;
    };
    
    std::vector<int> a = in(), b = in(), c = in();
    
    auto merge = [&](std::vector<int> a, std::vector<int> b) {
        auto c = a;
        for (int i = 0; i < n; i++) {
            if (a[i] != b[i]) {
                c[i] = 0 ^ 1 ^ 2 ^ a[i] ^ b[i];
            }
        }
        return c;
    };
    
    std::vector<std::vector<int>> s{a, b, c, merge(a, b), merge(a, c), merge(b, c), merge(merge(a, c), b), merge(merge(a, b), c), merge(merge(b, c), a)};
    
    int q;
    std::cin >> q;
    std::vector<int> t = in();
    
    for (int k = 0; k < 9; k++) {
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < n; j++) {
                pre[k][i][j + 1] = pre[k][i][j] + (s[k][j] == i);
            }
        }
    }
    
    int bad[9] {};
    for (int k = 0; k < 9; k++)
        for (int i = 0; i < n; i++)
            bad[k] += t[i] != s[k][i];
    
    std::set<std::pair<int, int>> p{{-1, -1}, {n, -1}};
    for (int i = 0; i < n; i++)
        p.emplace(i, t[i]);
    
    int ok = 0;
    for (int k = 0; k < 9; k++) {
        ok += bad[k] == 0;
    }
    if (ok) {
        std::cout << "Yes\n";
    } else {
        std::cout << "No\n";
    }
    
    auto rem = [&](int l, int r, int c) {
        for (int k = 0; k < 9; k++) {
            bad[k] -= (pre[k][c][r] - pre[k][c][l] != r - l);
        }
    };
    auto add = [&](int l, int r, int c) {
        for (int k = 0; k < 9; k++) {
            bad[k] += (pre[k][c][r] - pre[k][c][l] != r - l);
        }
    };
    
    while (q--) {
        int l, r;
        char ch;
        std::cin >> l >> r >> ch;
        l--;
        
        int x = std::string("JOI").find(ch);
        
        // for (int i = l; i < r; i++) {
            // t[i] = x;
        // }
        
        // if (s[0] == t) {
            // std::cout << "Yes\n";
        // } else {
            // std::cout << "No\n";
        // }
        
        auto it = p.lower_bound({l, -1});
        if (it->first > l) {
            int L = std::prev(it)->first;
            assert(L >= 0);
            int R = it->first;
            int c = std::prev(it)->second;
            rem(L, R, c);
            add(L, l, c);
            add(l, R, c);
            p.emplace(l, c);
        }
        
        it = p.lower_bound({r, -1});
        if (it->first > r) {
            int L = std::prev(it)->first;
            assert(L >= 0);
            int R = it->first;
            int c = std::prev(it)->second;
            rem(L, R, c);
            add(L, r, c);
            add(r, R, c);
            p.emplace(r, c);
        }
        
        assert(p.lower_bound({l, -1})->first == l);
        while (true) {
            it = p.lower_bound({l, -1});
            if (it->first < r) {
                rem(it->first, std::next(it)->first, it->second);
                p.erase(it);
            } else {
                break;
            }
        }
        assert(p.lower_bound({l, -1})->first == r);
        
        add(l, r, x);
        p.emplace(l, x);
        
        int ok = 0;
        for (int k = 0; k < 9; k++) {
            ok += bad[k] == 0;
        }
        if (ok) {
            std::cout << "Yes\n";
        } else {
            std::cout << "No\n";
        }
    }
    
    return 0;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 1148 KB Output is correct
2 Correct 150 ms 1108 KB Output is correct
3 Correct 109 ms 1072 KB Output is correct
4 Correct 146 ms 1088 KB Output is correct
5 Correct 145 ms 1032 KB Output is correct
6 Correct 139 ms 1152 KB Output is correct
7 Correct 140 ms 1144 KB Output is correct
8 Correct 174 ms 1068 KB Output is correct
9 Correct 147 ms 1108 KB Output is correct
10 Correct 153 ms 1080 KB Output is correct
11 Correct 151 ms 1172 KB Output is correct
12 Correct 144 ms 1144 KB Output is correct
13 Correct 151 ms 1076 KB Output is correct
14 Correct 162 ms 1320 KB Output is correct
15 Correct 146 ms 1144 KB Output is correct
16 Correct 146 ms 1040 KB Output is correct
17 Correct 155 ms 1040 KB Output is correct
18 Correct 107 ms 1176 KB Output is correct

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 1148 KB Output is correct
2 Correct 150 ms 1108 KB Output is correct
3 Correct 109 ms 1072 KB Output is correct
4 Correct 146 ms 1088 KB Output is correct
5 Correct 145 ms 1032 KB Output is correct
6 Correct 139 ms 1152 KB Output is correct
7 Correct 140 ms 1144 KB Output is correct
8 Correct 174 ms 1068 KB Output is correct
9 Correct 147 ms 1108 KB Output is correct
10 Correct 153 ms 1080 KB Output is correct
11 Correct 151 ms 1172 KB Output is correct
12 Correct 144 ms 1144 KB Output is correct
13 Correct 151 ms 1076 KB Output is correct
14 Correct 162 ms 1320 KB Output is correct
15 Correct 146 ms 1144 KB Output is correct
16 Correct 146 ms 1040 KB Output is correct
17 Correct 155 ms 1040 KB Output is correct
18 Correct 107 ms 1176 KB Output is correct
19 Correct 393 ms 41760 KB Output is correct
20 Correct 264 ms 42644 KB Output is correct
21 Correct 542 ms 41476 KB Output is correct
22 Correct 475 ms 37556 KB Output is correct
23 Correct 261 ms 5940 KB Output is correct
24 Correct 248 ms 5908 KB Output is correct
25 Correct 597 ms 43852 KB Output is correct
26 Correct 516 ms 43868 KB Output is correct
27 Correct 435 ms 43876 KB Output is correct
28 Correct 447 ms 43756 KB Output is correct
29 Correct 421 ms 42936 KB Output is correct
30 Correct 229 ms 5960 KB Output is correct
31 Correct 433 ms 43940 KB Output is correct
32 Correct 443 ms 40692 KB Output is correct
33 Correct 242 ms 5888 KB Output is correct
34 Correct 472 ms 43832 KB Output is correct
35 Correct 479 ms 33456 KB Output is correct
36 Correct 246 ms 5840 KB Output is correct
37 Correct 245 ms 5876 KB Output is correct
38 Correct 235 ms 43888 KB Output is correct
39 Correct 324 ms 43788 KB Output is correct
40 Correct 474 ms 29880 KB Output is correct
41 Correct 322 ms 44044 KB Output is correct
42 Correct 155 ms 44052 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 1148 KB Output is correct
2 Correct 150 ms 1108 KB Output is correct
3 Correct 109 ms 1072 KB Output is correct
4 Correct 146 ms 1088 KB Output is correct
5 Correct 145 ms 1032 KB Output is correct
6 Correct 139 ms 1152 KB Output is correct
7 Correct 140 ms 1144 KB Output is correct
8 Correct 174 ms 1068 KB Output is correct
9 Correct 147 ms 1108 KB Output is correct
10 Correct 153 ms 1080 KB Output is correct
11 Correct 151 ms 1172 KB Output is correct
12 Correct 144 ms 1144 KB Output is correct
13 Correct 151 ms 1076 KB Output is correct
14 Correct 162 ms 1320 KB Output is correct
15 Correct 146 ms 1144 KB Output is correct
16 Correct 146 ms 1040 KB Output is correct
17 Correct 155 ms 1040 KB Output is correct
18 Correct 107 ms 1176 KB Output is correct
19 Correct 145 ms 1048 KB Output is correct
20 Correct 107 ms 1092 KB Output is correct
21 Correct 149 ms 1128 KB Output is correct
22 Correct 126 ms 2304 KB Output is correct
23 Correct 150 ms 2624 KB Output is correct
24 Correct 139 ms 2428 KB Output is correct
25 Correct 143 ms 2568 KB Output is correct
26 Correct 139 ms 2568 KB Output is correct
27 Correct 143 ms 2552 KB Output is correct
28 Correct 129 ms 2336 KB Output is correct
29 Correct 145 ms 2608 KB Output is correct
30 Correct 131 ms 2428 KB Output is correct
31 Correct 142 ms 2536 KB Output is correct
32 Correct 141 ms 2556 KB Output is correct
33 Correct 163 ms 2708 KB Output is correct
34 Correct 130 ms 2376 KB Output is correct
35 Correct 143 ms 2540 KB Output is correct
36 Correct 148 ms 2572 KB Output is correct
37 Correct 144 ms 2568 KB Output is correct
38 Correct 150 ms 2536 KB Output is correct
39 Correct 144 ms 2504 KB Output is correct
40 Correct 151 ms 2660 KB Output is correct
41 Correct 147 ms 2592 KB Output is correct
42 Correct 149 ms 2608 KB Output is correct
43 Correct 136 ms 2500 KB Output is correct
44 Correct 147 ms 2620 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 1148 KB Output is correct
2 Correct 150 ms 1108 KB Output is correct
3 Correct 109 ms 1072 KB Output is correct
4 Correct 146 ms 1088 KB Output is correct
5 Correct 145 ms 1032 KB Output is correct
6 Correct 139 ms 1152 KB Output is correct
7 Correct 140 ms 1144 KB Output is correct
8 Correct 174 ms 1068 KB Output is correct
9 Correct 147 ms 1108 KB Output is correct
10 Correct 153 ms 1080 KB Output is correct
11 Correct 151 ms 1172 KB Output is correct
12 Correct 144 ms 1144 KB Output is correct
13 Correct 151 ms 1076 KB Output is correct
14 Correct 162 ms 1320 KB Output is correct
15 Correct 146 ms 1144 KB Output is correct
16 Correct 146 ms 1040 KB Output is correct
17 Correct 155 ms 1040 KB Output is correct
18 Correct 107 ms 1176 KB Output is correct
19 Correct 393 ms 41760 KB Output is correct
20 Correct 264 ms 42644 KB Output is correct
21 Correct 542 ms 41476 KB Output is correct
22 Correct 475 ms 37556 KB Output is correct
23 Correct 261 ms 5940 KB Output is correct
24 Correct 248 ms 5908 KB Output is correct
25 Correct 597 ms 43852 KB Output is correct
26 Correct 516 ms 43868 KB Output is correct
27 Correct 435 ms 43876 KB Output is correct
28 Correct 447 ms 43756 KB Output is correct
29 Correct 421 ms 42936 KB Output is correct
30 Correct 229 ms 5960 KB Output is correct
31 Correct 433 ms 43940 KB Output is correct
32 Correct 443 ms 40692 KB Output is correct
33 Correct 242 ms 5888 KB Output is correct
34 Correct 472 ms 43832 KB Output is correct
35 Correct 479 ms 33456 KB Output is correct
36 Correct 246 ms 5840 KB Output is correct
37 Correct 245 ms 5876 KB Output is correct
38 Correct 235 ms 43888 KB Output is correct
39 Correct 324 ms 43788 KB Output is correct
40 Correct 474 ms 29880 KB Output is correct
41 Correct 322 ms 44044 KB Output is correct
42 Correct 155 ms 44052 KB Output is correct
43 Correct 145 ms 1048 KB Output is correct
44 Correct 107 ms 1092 KB Output is correct
45 Correct 149 ms 1128 KB Output is correct
46 Correct 126 ms 2304 KB Output is correct
47 Correct 150 ms 2624 KB Output is correct
48 Correct 139 ms 2428 KB Output is correct
49 Correct 143 ms 2568 KB Output is correct
50 Correct 139 ms 2568 KB Output is correct
51 Correct 143 ms 2552 KB Output is correct
52 Correct 129 ms 2336 KB Output is correct
53 Correct 145 ms 2608 KB Output is correct
54 Correct 131 ms 2428 KB Output is correct
55 Correct 142 ms 2536 KB Output is correct
56 Correct 141 ms 2556 KB Output is correct
57 Correct 163 ms 2708 KB Output is correct
58 Correct 130 ms 2376 KB Output is correct
59 Correct 143 ms 2540 KB Output is correct
60 Correct 148 ms 2572 KB Output is correct
61 Correct 144 ms 2568 KB Output is correct
62 Correct 150 ms 2536 KB Output is correct
63 Correct 144 ms 2504 KB Output is correct
64 Correct 151 ms 2660 KB Output is correct
65 Correct 147 ms 2592 KB Output is correct
66 Correct 149 ms 2608 KB Output is correct
67 Correct 136 ms 2500 KB Output is correct
68 Correct 147 ms 2620 KB Output is correct
69 Correct 330 ms 37284 KB Output is correct
70 Correct 271 ms 43756 KB Output is correct
71 Correct 247 ms 5832 KB Output is correct
72 Correct 246 ms 5956 KB Output is correct
73 Correct 259 ms 5944 KB Output is correct
74 Correct 465 ms 37092 KB Output is correct
75 Correct 252 ms 6084 KB Output is correct
76 Correct 534 ms 43752 KB Output is correct
77 Correct 439 ms 37328 KB Output is correct
78 Correct 248 ms 5956 KB Output is correct
79 Correct 253 ms 5900 KB Output is correct
80 Correct 427 ms 32172 KB Output is correct
81 Correct 263 ms 5808 KB Output is correct
82 Correct 546 ms 43848 KB Output is correct
83 Correct 461 ms 41572 KB Output is correct
84 Correct 243 ms 5832 KB Output is correct
85 Correct 250 ms 5800 KB Output is correct
86 Correct 362 ms 34256 KB Output is correct
87 Correct 439 ms 43812 KB Output is correct
88 Correct 230 ms 5916 KB Output is correct
89 Correct 413 ms 39020 KB Output is correct
90 Correct 450 ms 43876 KB Output is correct
91 Correct 230 ms 5876 KB Output is correct
92 Correct 464 ms 33764 KB Output is correct
93 Correct 246 ms 5828 KB Output is correct
94 Correct 256 ms 5872 KB Output is correct
95 Correct 247 ms 5840 KB Output is correct
96 Correct 230 ms 43900 KB Output is correct
97 Correct 314 ms 43876 KB Output is correct
98 Correct 466 ms 29912 KB Output is correct
99 Correct 306 ms 44072 KB Output is correct
100 Correct 165 ms 44060 KB Output is correct