답안 #402981

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
402981 2021-05-12T15:50:23 Z mjhmjh1104 유괴 2 (JOI17_abduction2) C++14
44 / 100
5000 ms 9668 KB
#include <map>
#include <tuple>
#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;

int tree_a[131072], tree_b[131072];
vector<tuple<int, int, int>> tv;

void interval(int i, int b, int e, int l, int r) {
    if (r < b || e < l) return;
    if (l <= b && e <= r) {
        tv.push_back({ i, b, e });
        return;
    }
    int m = (b + e) / 2;
    interval(i * 2 + 1, b, m, l, r);
    interval(i * 2 + 2, m + 1, e, l, r);
}

int lower_bound_left_real_a(int i, int b, int e, int v) {
    if (b == e) return b;
    int m = (b + e) / 2;
    if (tree_a[i * 2 + 2] > v) return lower_bound_left_real_a(i * 2 + 2, m + 1, e, v);
    return lower_bound_left_real_a(i * 2 + 1, b, m, v);
}

int lower_bound_left_real_b(int i, int b, int e, int v) {
    if (b == e) return b;
    int m = (b + e) / 2;
    if (tree_b[i * 2 + 2] > v) return lower_bound_left_real_b(i * 2 + 2, m + 1, e, v);
    return lower_bound_left_real_b(i * 2 + 1, b, m, v);
}

int lower_bound_right_real_a(int i, int b, int e, int v) {
    if (b == e) return b;
    int m = (b + e) / 2;
    if (tree_a[i * 2 + 1] > v) return lower_bound_right_real_a(i * 2 + 1, b, m, v);
    return lower_bound_right_real_a(i * 2 + 2, m + 1, e, v);
}

int lower_bound_right_real_b(int i, int b, int e, int v) {
    if (b == e) return b;
    int m = (b + e) / 2;
    if (tree_b[i * 2 + 1] > v) return lower_bound_right_real_b(i * 2 + 1, b, m, v);
    return lower_bound_right_real_b(i * 2 + 2, m + 1, e, v);
}

int lower_bound_left_a(int x, int v) {
    tv.clear();
    interval(0, 0, 65535, 0, x);
    reverse(tv.begin(), tv.end());
    for (auto &i: tv) {
        auto [ a, b, c ] = i;
        if (tree_a[a] > v) return lower_bound_left_real_a(a, b, c, v);
    }
    return -1;
}

int lower_bound_left_b(int x, int v) {
    tv.clear();
    interval(0, 0, 65535, 0, x);
    reverse(tv.begin(), tv.end());
    for (auto &i: tv) {
        auto [ a, b, c ] = i;
        if (tree_b[a] > v) return lower_bound_left_real_b(a, b, c, v);
    }
    return -1;
}

int lower_bound_right_a(int x, int v) {
    tv.clear();
    interval(0, 0, 65535, x, 65535);
    for (auto &i: tv) {
        auto [ a, b, c ] = i;
        if (tree_a[a] > v) return lower_bound_right_real_a(a, b, c, v);
    }
    return 65536;
}

int lower_bound_right_b(int x, int v) {
    tv.clear();
    interval(0, 0, 65535, x, 65535);
    for (auto &i: tv) {
        auto [ a, b, c ] = i;
        if (tree_b[a] > v) return lower_bound_right_real_b(a, b, c, v);
    }
    return 65536;
}

int h, w, q;
int a[50006], b[50006];
pair<int, bool> lt[100006];
vector<pair<int, long long>> v[100006];
vector<int> compress;

int main() {
    scanf("%d%d%d", &w, &h, &q);
    for (int i = 0; i < w; i++) scanf("%d", a + i);
    for (int i = 0; i < h; i++) scanf("%d", b + i);
    for (int i = 0; i < w; i++) compress.push_back(a[i]);
    for (int i = 0; i < h; i++) compress.push_back(b[i]);
    sort(compress.begin(), compress.end());
    for (int i = 0; i < w; i++) a[i] = lower_bound(compress.begin(), compress.end(), a[i]) - compress.begin();
    for (int i = 0; i < h; i++) b[i] = lower_bound(compress.begin(), compress.end(), b[i]) - compress.begin();
    for (int i = 0; i < w; i++) lt[a[i]] = { i, false };
    for (int i = 0; i < h; i++) lt[b[i]] = { i, true };
    for (int i = 0; i < w; i++) tree_a[65535 + i] = a[i];
    for (int i = 0; i < h; i++) tree_b[65535 + i] = b[i];
    for (int i = 65534; i >= 0; i--) {
        tree_a[i] = max(tree_a[i * 2 + 1], tree_a[i * 2 + 2]);
        tree_b[i] = max(tree_b[i * 2 + 1], tree_b[i * 2 + 2]);
    }
    for (int i = 0; i < q; i++) {
        int s, t;
        scanf("%d%d", &t, &s);
        s--, t--;
        long long res = 0;
        if (s > 0) { // up
            for (int j = 0; j < 100006; j++) v[j].clear();
            int it = lower_bound_left_b(s - 1, a[t]);
            if (it < 0) res = max(res, (long long)s);
            else {
                v[b[it]].push_back({ t, s - it });
                for (int i = 0; i < h + w; i++) if (!v[i].empty()) {
                    if (!lt[i].second) {
                        int above = lower_bound_left_b(v[i].front().first, a[lt[i].first]), bottom = lower_bound_right_b(v[i].front().first, a[lt[i].first]);
                        if (above < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[b[above]].empty() && lower_bound_left_a(v[b[above]].front().first, b[above]) != lower_bound_left_a(lt[i].first, b[above])) v[b[above]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - above));
                            v[b[above]].push_back({ lt[i].first, ret });
                        }
                        if (bottom >= 65536) for (auto &j: v[i]) res = max(res, j.second + (h - 1 - j.first));
                        else {
                            if (!v[b[bottom]].empty() && lower_bound_left_a(v[b[bottom]].front().first, b[bottom]) != lower_bound_left_a(lt[i].first, b[bottom])) v[b[bottom]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (bottom - j.first));
                            v[b[bottom]].push_back({ lt[i].first, ret });
                        }
                    } else {
                        int left = lower_bound_left_a(v[i].front().first, b[lt[i].first]), right = lower_bound_right_a(v[i].front().first, b[lt[i].first]);
                        if (left < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[a[left]].empty() && lower_bound_left_b(v[a[left]].front().first, a[left]) != lower_bound_left_b(lt[i].first, a[left])) v[a[left]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - left));
                            v[a[left]].push_back({ lt[i].first, ret });
                        }
                        if (right >= 65536) for (auto &j: v[i]) res = max(res, j.second + (w - 1 - j.first));
                        else {
                            if (!v[a[right]].empty() && lower_bound_left_b(v[a[right]].front().first, a[right]) != lower_bound_left_b(lt[i].first, a[right])) v[a[right]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (right - j.first));
                            v[a[right]].push_back({ lt[i].first, ret });
                        }
                    }
                }
            }
        }
        if (s < h - 1) { // down
            for (int j = 0; j < 100006; j++) v[j].clear();
            int it = lower_bound_right_b(s + 1, a[t]);
            if (it >= 65536) res = max(res, (long long)(h - 1 - s));
            else {
                v[b[it]].push_back({ t, it - s });
                for (int i = 0; i < h + w; i++) if (!v[i].empty()) {
                    if (!lt[i].second) {
                        int above = lower_bound_left_b(v[i].front().first, a[lt[i].first]), bottom = lower_bound_right_b(v[i].front().first, a[lt[i].first]);
                        if (above < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[b[above]].empty() && lower_bound_left_a(v[b[above]].front().first, b[above]) != lower_bound_left_a(lt[i].first, b[above])) v[b[above]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - above));
                            v[b[above]].push_back({ lt[i].first, ret });
                        }
                        if (bottom >= 65536) for (auto &j: v[i]) res = max(res, j.second + (h - 1 - j.first));
                        else {
                            if (!v[b[bottom]].empty() && lower_bound_left_a(v[b[bottom]].front().first, b[bottom]) != lower_bound_left_a(lt[i].first, b[bottom])) v[b[bottom]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (bottom - j.first));
                            v[b[bottom]].push_back({ lt[i].first, ret });
                        }
                    } else {
                        int left = lower_bound_left_a(v[i].front().first, b[lt[i].first]), right = lower_bound_right_a(v[i].front().first, b[lt[i].first]);
                        if (left < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[a[left]].empty() && lower_bound_left_b(v[a[left]].front().first, a[left]) != lower_bound_left_b(lt[i].first, a[left])) v[a[left]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - left));
                            v[a[left]].push_back({ lt[i].first, ret });
                        }
                        if (right >= 65536) for (auto &j: v[i]) res = max(res, j.second + (w - 1 - j.first));
                        else {
                            if (!v[a[right]].empty() && lower_bound_left_b(v[a[right]].front().first, a[right]) != lower_bound_left_b(lt[i].first, a[right])) v[a[right]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (right - j.first));
                            v[a[right]].push_back({ lt[i].first, ret });
                        }
                    }
                }
            }
        }
        if (t > 0) { // left
            for (int j = 0; j < 100006; j++) v[j].clear();
            int it = lower_bound_left_a(t - 1, b[s]);
            if (it < 0) res = max(res, (long long)t);
            else {
                v[a[it]].push_back({ s, t - it });
                for (int i = 0; i < h + w; i++) if (!v[i].empty()) {
                    if (!lt[i].second) {
                        int above = lower_bound_left_b(v[i].front().first, a[lt[i].first]), bottom = lower_bound_right_b(v[i].front().first, a[lt[i].first]);
                        if (above < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[b[above]].empty() && lower_bound_left_a(v[b[above]].front().first, b[above]) != lower_bound_left_a(lt[i].first, b[above])) v[b[above]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - above));
                            v[b[above]].push_back({ lt[i].first, ret });
                        }
                        if (bottom >= 65536) for (auto &j: v[i]) res = max(res, j.second + (h - 1 - j.first));
                        else {
                            if (!v[b[bottom]].empty() && lower_bound_left_a(v[b[bottom]].front().first, b[bottom]) != lower_bound_left_a(lt[i].first, b[bottom])) v[b[bottom]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (bottom - j.first));
                            v[b[bottom]].push_back({ lt[i].first, ret });
                        }
                    } else {
                        int left = lower_bound_left_a(v[i].front().first, b[lt[i].first]), right = lower_bound_right_a(v[i].front().first, b[lt[i].first]);
                        if (left < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[a[left]].empty() && lower_bound_left_b(v[a[left]].front().first, a[left]) != lower_bound_left_b(lt[i].first, a[left])) v[a[left]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - left));
                            v[a[left]].push_back({ lt[i].first, ret });
                        }
                        if (right >= 65536) for (auto &j: v[i]) res = max(res, j.second + (w - 1 - j.first));
                        else {
                            if (!v[a[right]].empty() && lower_bound_left_b(v[a[right]].front().first, a[right]) != lower_bound_left_b(lt[i].first, a[right])) v[a[right]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (right - j.first));
                            v[a[right]].push_back({ lt[i].first, ret });
                        }
                    }
                }
            }
        }
        if (t < w - 1) { // right
            for (int j = 0; j < 100006; j++) v[j].clear();
            int it = lower_bound_right_a(t + 1, b[s]);
            if (it >= 65536) res = max(res, (long long)(w - 1 - t));
            else {
                v[a[it]].push_back({ s, it - t });
                for (int i = 0; i < h + w; i++) if (!v[i].empty()) {
                    if (!lt[i].second) {
                        int above = lower_bound_left_b(v[i].front().first, a[lt[i].first]), bottom = lower_bound_right_b(v[i].front().first, a[lt[i].first]);
                        if (above < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[b[above]].empty() && lower_bound_left_a(v[b[above]].front().first, b[above]) != lower_bound_left_a(lt[i].first, b[above])) v[b[above]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - above));
                            v[b[above]].push_back({ lt[i].first, ret });
                        }
                        if (bottom >= 65536) for (auto &j: v[i]) res = max(res, j.second + (h - 1 - j.first));
                        else {
                            if (!v[b[bottom]].empty() && lower_bound_left_a(v[b[bottom]].front().first, b[bottom]) != lower_bound_left_a(lt[i].first, b[bottom])) v[b[bottom]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (bottom - j.first));
                            v[b[bottom]].push_back({ lt[i].first, ret });
                        }
                    } else {
                        int left = lower_bound_left_a(v[i].front().first, b[lt[i].first]), right = lower_bound_right_a(v[i].front().first, b[lt[i].first]);
                        if (left < 0) for (auto &j: v[i]) res = max(res, j.second + j.first);
                        else {
                            if (!v[a[left]].empty() && lower_bound_left_b(v[a[left]].front().first, a[left]) != lower_bound_left_b(lt[i].first, a[left])) v[a[left]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (j.first - left));
                            v[a[left]].push_back({ lt[i].first, ret });
                        }
                        if (right >= 65536) for (auto &j: v[i]) res = max(res, j.second + (w - 1 - j.first));
                        else {
                            if (!v[a[right]].empty() && lower_bound_left_b(v[a[right]].front().first, a[right]) != lower_bound_left_b(lt[i].first, a[right])) v[a[right]].clear();
                            long long ret = 0;
                            for (auto &j: v[i]) ret = max(ret, j.second + (right - j.first));
                            v[a[right]].push_back({ lt[i].first, ret });
                        }
                    }
                }
            }
        }
        printf("%lld\n", res);
    }
}

Compilation message

abduction2.cpp: In function 'int lower_bound_left_a(int, int)':
abduction2.cpp:55:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   55 |         auto [ a, b, c ] = i;
      |              ^
abduction2.cpp: In function 'int lower_bound_left_b(int, int)':
abduction2.cpp:66:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   66 |         auto [ a, b, c ] = i;
      |              ^
abduction2.cpp: In function 'int lower_bound_right_a(int, int)':
abduction2.cpp:76:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   76 |         auto [ a, b, c ] = i;
      |              ^
abduction2.cpp: In function 'int lower_bound_right_b(int, int)':
abduction2.cpp:86:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   86 |         auto [ a, b, c ] = i;
      |              ^
abduction2.cpp: In function 'int main()':
abduction2.cpp:99:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |     scanf("%d%d%d", &w, &h, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
abduction2.cpp:100:38: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |     for (int i = 0; i < w; i++) scanf("%d", a + i);
      |                                 ~~~~~^~~~~~~~~~~~~
abduction2.cpp:101:38: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |     for (int i = 0; i < h; i++) scanf("%d", b + i);
      |                                 ~~~~~^~~~~~~~~~~~~
abduction2.cpp:117:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  117 |         scanf("%d%d", &t, &s);
      |         ~~~~~^~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3148 KB Output is correct
2 Correct 3 ms 3148 KB Output is correct
3 Correct 3 ms 3148 KB Output is correct
4 Correct 3 ms 3148 KB Output is correct
5 Correct 3 ms 3152 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 3 ms 3156 KB Output is correct
8 Correct 3 ms 3148 KB Output is correct
9 Correct 3 ms 3140 KB Output is correct
10 Correct 3 ms 3148 KB Output is correct
11 Correct 4 ms 3148 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3148 KB Output is correct
2 Correct 3 ms 3148 KB Output is correct
3 Correct 3 ms 3148 KB Output is correct
4 Correct 3 ms 3148 KB Output is correct
5 Correct 3 ms 3152 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 3 ms 3156 KB Output is correct
8 Correct 3 ms 3148 KB Output is correct
9 Correct 3 ms 3140 KB Output is correct
10 Correct 3 ms 3148 KB Output is correct
11 Correct 4 ms 3148 KB Output is correct
12 Correct 4 ms 3276 KB Output is correct
13 Correct 4 ms 3292 KB Output is correct
14 Correct 4 ms 3276 KB Output is correct
15 Correct 5 ms 3296 KB Output is correct
16 Correct 4 ms 3404 KB Output is correct
17 Correct 4 ms 3288 KB Output is correct
18 Correct 4 ms 3288 KB Output is correct
19 Correct 9 ms 3348 KB Output is correct
20 Correct 11 ms 3372 KB Output is correct
21 Correct 13 ms 3276 KB Output is correct
22 Correct 14 ms 3416 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3148 KB Output is correct
2 Correct 3 ms 3148 KB Output is correct
3 Correct 3 ms 3148 KB Output is correct
4 Correct 3 ms 3148 KB Output is correct
5 Correct 3 ms 3152 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 3 ms 3156 KB Output is correct
8 Correct 3 ms 3148 KB Output is correct
9 Correct 3 ms 3140 KB Output is correct
10 Correct 3 ms 3148 KB Output is correct
11 Correct 4 ms 3148 KB Output is correct
12 Correct 4 ms 3276 KB Output is correct
13 Correct 4 ms 3292 KB Output is correct
14 Correct 4 ms 3276 KB Output is correct
15 Correct 5 ms 3296 KB Output is correct
16 Correct 4 ms 3404 KB Output is correct
17 Correct 4 ms 3288 KB Output is correct
18 Correct 4 ms 3288 KB Output is correct
19 Correct 9 ms 3348 KB Output is correct
20 Correct 11 ms 3372 KB Output is correct
21 Correct 13 ms 3276 KB Output is correct
22 Correct 14 ms 3416 KB Output is correct
23 Correct 41 ms 6144 KB Output is correct
24 Correct 42 ms 6092 KB Output is correct
25 Correct 46 ms 6204 KB Output is correct
26 Correct 41 ms 6112 KB Output is correct
27 Correct 42 ms 6188 KB Output is correct
28 Correct 74 ms 7076 KB Output is correct
29 Correct 40 ms 6204 KB Output is correct
30 Correct 167 ms 7880 KB Output is correct
31 Correct 206 ms 8388 KB Output is correct
32 Correct 38 ms 6040 KB Output is correct
33 Correct 71 ms 6552 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 3300 KB Output is correct
2 Correct 58 ms 3428 KB Output is correct
3 Correct 57 ms 3276 KB Output is correct
4 Correct 60 ms 3304 KB Output is correct
5 Correct 57 ms 3304 KB Output is correct
6 Correct 130 ms 3344 KB Output is correct
7 Correct 122 ms 3400 KB Output is correct
8 Correct 362 ms 3636 KB Output is correct
9 Correct 384 ms 3376 KB Output is correct
10 Correct 431 ms 3400 KB Output is correct
11 Correct 528 ms 3432 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 3148 KB Output is correct
2 Correct 3 ms 3148 KB Output is correct
3 Correct 3 ms 3148 KB Output is correct
4 Correct 3 ms 3148 KB Output is correct
5 Correct 3 ms 3152 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 3 ms 3156 KB Output is correct
8 Correct 3 ms 3148 KB Output is correct
9 Correct 3 ms 3140 KB Output is correct
10 Correct 3 ms 3148 KB Output is correct
11 Correct 4 ms 3148 KB Output is correct
12 Correct 4 ms 3276 KB Output is correct
13 Correct 4 ms 3292 KB Output is correct
14 Correct 4 ms 3276 KB Output is correct
15 Correct 5 ms 3296 KB Output is correct
16 Correct 4 ms 3404 KB Output is correct
17 Correct 4 ms 3288 KB Output is correct
18 Correct 4 ms 3288 KB Output is correct
19 Correct 9 ms 3348 KB Output is correct
20 Correct 11 ms 3372 KB Output is correct
21 Correct 13 ms 3276 KB Output is correct
22 Correct 14 ms 3416 KB Output is correct
23 Correct 41 ms 6144 KB Output is correct
24 Correct 42 ms 6092 KB Output is correct
25 Correct 46 ms 6204 KB Output is correct
26 Correct 41 ms 6112 KB Output is correct
27 Correct 42 ms 6188 KB Output is correct
28 Correct 74 ms 7076 KB Output is correct
29 Correct 40 ms 6204 KB Output is correct
30 Correct 167 ms 7880 KB Output is correct
31 Correct 206 ms 8388 KB Output is correct
32 Correct 38 ms 6040 KB Output is correct
33 Correct 71 ms 6552 KB Output is correct
34 Correct 56 ms 3300 KB Output is correct
35 Correct 58 ms 3428 KB Output is correct
36 Correct 57 ms 3276 KB Output is correct
37 Correct 60 ms 3304 KB Output is correct
38 Correct 57 ms 3304 KB Output is correct
39 Correct 130 ms 3344 KB Output is correct
40 Correct 122 ms 3400 KB Output is correct
41 Correct 362 ms 3636 KB Output is correct
42 Correct 384 ms 3376 KB Output is correct
43 Correct 431 ms 3400 KB Output is correct
44 Correct 528 ms 3432 KB Output is correct
45 Correct 180 ms 6116 KB Output is correct
46 Correct 175 ms 6176 KB Output is correct
47 Correct 180 ms 6180 KB Output is correct
48 Correct 178 ms 6188 KB Output is correct
49 Correct 178 ms 6076 KB Output is correct
50 Correct 2043 ms 7468 KB Output is correct
51 Correct 1816 ms 7568 KB Output is correct
52 Execution timed out 5049 ms 9668 KB Time limit exceeded
53 Halted 0 ms 0 KB -