Submission #526203

# Submission time Handle Problem Language Result Execution time Memory
526203 2022-02-13T22:52:42 Z Plurm Diversity (CEOI21_diversity) C++11
64 / 100
7000 ms 17068 KB
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;

template <typename T>
class FenwickTree{
public:
  T* FT;
  int n;
  bool negmode;
  FenwickTree(int sz = 1 << 19, bool negindex = true){
    n = sz+505;
    FT = new T[n];
    fill(FT, FT+n, (T)0);
    negmode = negindex;
  }
  void add(int idx, T amt){
    if(negmode) idx += n/2;
    while(idx < n){
      FT[idx] += amt;
      idx += idx & -idx;
    }
  }
  T sum(int idx){
    if(negmode) idx += n/2;
    T ret = (T)0;
    while(idx > 0){
      ret += FT[idx];
      idx -= idx & -idx;
    }
    return ret;
  }
  int lower_bound(const int v){
    if(v > FT[1]) return 0;
    int cur = 1 << 18;
    int part = FT[cur];
    for(int i = 17; i >= 0; i--){
      if(part >= v){
        cur += 1 << i;
        part += FT[cur];
      }else{
        part -= FT[cur];
        cur -= 1 << i;
        part += FT[cur];
      }
    }
    if(part < v) return cur-1;
    return cur;
  }
  int upper_bound(const int v){
    return lower_bound(v+1);
  }
};

FenwickTree<int> FT1; // Ri
FenwickTree<long long> FT2; // Ri * i
int cnt[300005];
int a[300005];
// abstract deque
// fenwick indexing:
// [...] [-3] [-2] [-1] [0] [1] [2] [...]
// deque indexing:
// [...] [6] [4] [2] [1] [3] [5] [...]
// invariant:
// dq[-i] <= dq[i] for all positive i
// dq[-i] >= dq[i+1] for all positive i

int dq2fw(int idx){
  return idx/2 * (idx % 2 ? 1 : -1);
}

FenwickTree<int> dq(300000, false); // using deque indexing
long long deque_add(const int x){
  int idx = dq.upper_bound(x)+1;
  dq.add(idx, 1);
  dq.add(idx+1, -1);
  int b = dq2fw(idx);
  FT1.add(b, 1);
  FT2.add(b, b);
  return FT2.FT[1 << 19] - FT2.sum(b) - 1ll * (b-1) * (FT1.FT[1 << 19] - FT1.sum(b))
  + 1ll * (b+1) * FT1.sum(b-1) - FT2.sum(b-1) + x+1;
}
long long deque_remove(const int x){
  int idx = dq.lower_bound(x);
  dq.add(idx, -1);
  dq.add(idx+1, 1);
  int b = dq2fw(idx);
  FT1.add(b, -1);
  FT2.add(b, -b);
  return FT2.FT[1 << 19] - FT2.sum(b) - 1ll * (b-1) * (FT1.FT[1 << 19] - FT1.sum(b))
  + 1ll * (b+1) * FT1.sum(b-1) - FT2.sum(b-1) + x;
}

vector<tuple<int,int,int>> qbckt[300005]; // (L, R, Q)
long long answer[50005];
int qcnt[2048];

int main(){
	int n,q;
	scanf("%d%d",&n,&q);
	for(int i = 1; i <= n; i++){
		scanf("%d",a+i);
	}
  int SQRT = 1.2*n/sqrt(q);
  vector<pair<int,int>> rawq;
  for(int i = 0; i < q; i++){
    int l, r;
    scanf("%d%d",&l,&r);
    rawq.emplace_back(l,r);
    qcnt[l/SQRT]++;
  }
  for(int i = 0; i <= n/SQRT+2; i++){
    qbckt[i].reserve(qcnt[i]);
  }
  for(int i = 0; i < q; i++){
    int l, r;
    tie(l, r) = rawq[i];
    qbckt[l / SQRT].emplace_back(l, r, i);
  }
  int lptr = 1;
  int rptr = 0;
  long long ans = 0ll;
  for(int i = 0; i <= n/SQRT+2; i++){
    sort(qbckt[i].begin(), qbckt[i].end(), [](tuple<int,int,int> x, tuple<int,int,int> y){
      return get<1>(x) < get<1>(y);
    });
    // Below goes declaratively.
    for(auto qr : qbckt[i]){
      int l, r, qnum;
      tie(l, r, qnum) = qr;
      while(rptr < r){
        rptr++;
        ans += deque_add(cnt[a[rptr]]);
        cnt[a[rptr]]++;
      }
      while(lptr > l){
        lptr--;
        ans += deque_add(cnt[a[lptr]]);
        cnt[a[lptr]]++;
      }
      while(lptr < l){
        ans -= deque_remove(cnt[a[lptr]]);
        cnt[a[lptr]]--;
        lptr++;
      }
      while(rptr > r){
        ans -= deque_remove(cnt[a[rptr]]);
        cnt[a[rptr]]--;
        rptr--;
      }
      answer[qnum] = ans;
    }
  }
  for(int i = 0; i < q; i++){
    printf("%lld\n", answer[i]);
  }
	return 0;
}

Compilation message

diversity.cpp: In function 'int main()':
diversity.cpp:100:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |  scanf("%d%d",&n,&q);
      |  ~~~~~^~~~~~~~~~~~~~
diversity.cpp:102:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |   scanf("%d",a+i);
      |   ~~~~~^~~~~~~~~~
diversity.cpp:108:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  108 |     scanf("%d%d",&l,&r);
      |     ~~~~~^~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14668 KB Output is correct
2 Correct 7 ms 14696 KB Output is correct
3 Correct 7 ms 14668 KB Output is correct
4 Correct 7 ms 14668 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 8 ms 14656 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 7 ms 14672 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14664 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14588 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 10 ms 14752 KB Output is correct
4 Correct 38 ms 15088 KB Output is correct
5 Correct 64 ms 15476 KB Output is correct
6 Correct 93 ms 15852 KB Output is correct
7 Correct 88 ms 15812 KB Output is correct
8 Correct 85 ms 15820 KB Output is correct
9 Correct 89 ms 15856 KB Output is correct
10 Correct 88 ms 15812 KB Output is correct
11 Correct 98 ms 15852 KB Output is correct
12 Correct 85 ms 15772 KB Output is correct
13 Correct 97 ms 15824 KB Output is correct
14 Correct 84 ms 15796 KB Output is correct
15 Correct 85 ms 15848 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14588 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 10 ms 14752 KB Output is correct
4 Correct 38 ms 15088 KB Output is correct
5 Correct 64 ms 15476 KB Output is correct
6 Correct 93 ms 15852 KB Output is correct
7 Correct 88 ms 15812 KB Output is correct
8 Correct 85 ms 15820 KB Output is correct
9 Correct 89 ms 15856 KB Output is correct
10 Correct 88 ms 15812 KB Output is correct
11 Correct 98 ms 15852 KB Output is correct
12 Correct 85 ms 15772 KB Output is correct
13 Correct 97 ms 15824 KB Output is correct
14 Correct 84 ms 15796 KB Output is correct
15 Correct 85 ms 15848 KB Output is correct
16 Correct 8 ms 14668 KB Output is correct
17 Correct 8 ms 14668 KB Output is correct
18 Correct 9 ms 14668 KB Output is correct
19 Correct 36 ms 15068 KB Output is correct
20 Correct 66 ms 15472 KB Output is correct
21 Correct 87 ms 15832 KB Output is correct
22 Correct 86 ms 15816 KB Output is correct
23 Correct 89 ms 15848 KB Output is correct
24 Correct 96 ms 15848 KB Output is correct
25 Correct 91 ms 15852 KB Output is correct
26 Correct 108 ms 15852 KB Output is correct
27 Correct 91 ms 15856 KB Output is correct
28 Correct 90 ms 15860 KB Output is correct
29 Correct 89 ms 15896 KB Output is correct
30 Correct 90 ms 15856 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14588 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 10 ms 14752 KB Output is correct
4 Correct 38 ms 15088 KB Output is correct
5 Correct 64 ms 15476 KB Output is correct
6 Correct 93 ms 15852 KB Output is correct
7 Correct 88 ms 15812 KB Output is correct
8 Correct 85 ms 15820 KB Output is correct
9 Correct 89 ms 15856 KB Output is correct
10 Correct 88 ms 15812 KB Output is correct
11 Correct 98 ms 15852 KB Output is correct
12 Correct 85 ms 15772 KB Output is correct
13 Correct 97 ms 15824 KB Output is correct
14 Correct 84 ms 15796 KB Output is correct
15 Correct 85 ms 15848 KB Output is correct
16 Correct 8 ms 14668 KB Output is correct
17 Correct 8 ms 14668 KB Output is correct
18 Correct 9 ms 14668 KB Output is correct
19 Correct 36 ms 15068 KB Output is correct
20 Correct 66 ms 15472 KB Output is correct
21 Correct 87 ms 15832 KB Output is correct
22 Correct 86 ms 15816 KB Output is correct
23 Correct 89 ms 15848 KB Output is correct
24 Correct 96 ms 15848 KB Output is correct
25 Correct 91 ms 15852 KB Output is correct
26 Correct 108 ms 15852 KB Output is correct
27 Correct 91 ms 15856 KB Output is correct
28 Correct 90 ms 15860 KB Output is correct
29 Correct 89 ms 15896 KB Output is correct
30 Correct 90 ms 15856 KB Output is correct
31 Correct 7 ms 14668 KB Output is correct
32 Correct 7 ms 14668 KB Output is correct
33 Correct 7 ms 14668 KB Output is correct
34 Correct 10 ms 14688 KB Output is correct
35 Correct 11 ms 14744 KB Output is correct
36 Correct 10 ms 14676 KB Output is correct
37 Correct 21 ms 14796 KB Output is correct
38 Correct 24 ms 14908 KB Output is correct
39 Correct 35 ms 15052 KB Output is correct
40 Correct 70 ms 15436 KB Output is correct
41 Correct 108 ms 15864 KB Output is correct
42 Correct 98 ms 15856 KB Output is correct
43 Correct 92 ms 15756 KB Output is correct
44 Correct 95 ms 15852 KB Output is correct
45 Correct 93 ms 15840 KB Output is correct
46 Correct 105 ms 15764 KB Output is correct
47 Correct 94 ms 15864 KB Output is correct
48 Correct 91 ms 15820 KB Output is correct
49 Correct 93 ms 15876 KB Output is correct
50 Correct 97 ms 15820 KB Output is correct
51 Correct 114 ms 15768 KB Output is correct
52 Correct 100 ms 15812 KB Output is correct
53 Correct 97 ms 15856 KB Output is correct
54 Correct 97 ms 15860 KB Output is correct
55 Correct 95 ms 15816 KB Output is correct
56 Correct 103 ms 15860 KB Output is correct
57 Correct 93 ms 15800 KB Output is correct
58 Correct 91 ms 15736 KB Output is correct
59 Correct 114 ms 15804 KB Output is correct
60 Correct 116 ms 15840 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14668 KB Output is correct
2 Correct 7 ms 14696 KB Output is correct
3 Correct 7 ms 14668 KB Output is correct
4 Correct 7 ms 14668 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 8 ms 14656 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 7 ms 14672 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14664 KB Output is correct
11 Correct 7 ms 14588 KB Output is correct
12 Correct 7 ms 14668 KB Output is correct
13 Correct 10 ms 14752 KB Output is correct
14 Correct 38 ms 15088 KB Output is correct
15 Correct 64 ms 15476 KB Output is correct
16 Correct 93 ms 15852 KB Output is correct
17 Correct 88 ms 15812 KB Output is correct
18 Correct 85 ms 15820 KB Output is correct
19 Correct 89 ms 15856 KB Output is correct
20 Correct 88 ms 15812 KB Output is correct
21 Correct 98 ms 15852 KB Output is correct
22 Correct 85 ms 15772 KB Output is correct
23 Correct 97 ms 15824 KB Output is correct
24 Correct 84 ms 15796 KB Output is correct
25 Correct 85 ms 15848 KB Output is correct
26 Correct 8 ms 14668 KB Output is correct
27 Correct 8 ms 14668 KB Output is correct
28 Correct 9 ms 14668 KB Output is correct
29 Correct 36 ms 15068 KB Output is correct
30 Correct 66 ms 15472 KB Output is correct
31 Correct 87 ms 15832 KB Output is correct
32 Correct 86 ms 15816 KB Output is correct
33 Correct 89 ms 15848 KB Output is correct
34 Correct 96 ms 15848 KB Output is correct
35 Correct 91 ms 15852 KB Output is correct
36 Correct 108 ms 15852 KB Output is correct
37 Correct 91 ms 15856 KB Output is correct
38 Correct 90 ms 15860 KB Output is correct
39 Correct 89 ms 15896 KB Output is correct
40 Correct 90 ms 15856 KB Output is correct
41 Correct 7 ms 14668 KB Output is correct
42 Correct 7 ms 14668 KB Output is correct
43 Correct 7 ms 14668 KB Output is correct
44 Correct 10 ms 14688 KB Output is correct
45 Correct 11 ms 14744 KB Output is correct
46 Correct 10 ms 14676 KB Output is correct
47 Correct 21 ms 14796 KB Output is correct
48 Correct 24 ms 14908 KB Output is correct
49 Correct 35 ms 15052 KB Output is correct
50 Correct 70 ms 15436 KB Output is correct
51 Correct 108 ms 15864 KB Output is correct
52 Correct 98 ms 15856 KB Output is correct
53 Correct 92 ms 15756 KB Output is correct
54 Correct 95 ms 15852 KB Output is correct
55 Correct 93 ms 15840 KB Output is correct
56 Correct 105 ms 15764 KB Output is correct
57 Correct 94 ms 15864 KB Output is correct
58 Correct 91 ms 15820 KB Output is correct
59 Correct 93 ms 15876 KB Output is correct
60 Correct 97 ms 15820 KB Output is correct
61 Correct 114 ms 15768 KB Output is correct
62 Correct 100 ms 15812 KB Output is correct
63 Correct 97 ms 15856 KB Output is correct
64 Correct 97 ms 15860 KB Output is correct
65 Correct 95 ms 15816 KB Output is correct
66 Correct 103 ms 15860 KB Output is correct
67 Correct 93 ms 15800 KB Output is correct
68 Correct 91 ms 15736 KB Output is correct
69 Correct 114 ms 15804 KB Output is correct
70 Correct 116 ms 15840 KB Output is correct
71 Correct 23 ms 14796 KB Output is correct
72 Correct 23 ms 14796 KB Output is correct
73 Correct 21 ms 14812 KB Output is correct
74 Correct 22 ms 14912 KB Output is correct
75 Correct 22 ms 14900 KB Output is correct
76 Correct 38 ms 15052 KB Output is correct
77 Correct 45 ms 15108 KB Output is correct
78 Correct 45 ms 15032 KB Output is correct
79 Correct 39 ms 15008 KB Output is correct
80 Correct 47 ms 15052 KB Output is correct
81 Correct 71 ms 15512 KB Output is correct
82 Correct 70 ms 15520 KB Output is correct
83 Correct 70 ms 15508 KB Output is correct
84 Correct 82 ms 15516 KB Output is correct
85 Correct 69 ms 15436 KB Output is correct
86 Correct 70 ms 15524 KB Output is correct
87 Correct 70 ms 15436 KB Output is correct
88 Correct 71 ms 15684 KB Output is correct
89 Correct 72 ms 15552 KB Output is correct
90 Correct 92 ms 15520 KB Output is correct
91 Correct 107 ms 16244 KB Output is correct
92 Correct 107 ms 16252 KB Output is correct
93 Correct 105 ms 16284 KB Output is correct
94 Correct 100 ms 16196 KB Output is correct
95 Correct 101 ms 16224 KB Output is correct
96 Correct 99 ms 16608 KB Output is correct
97 Correct 101 ms 16636 KB Output is correct
98 Correct 100 ms 16656 KB Output is correct
99 Correct 98 ms 16624 KB Output is correct
100 Correct 98 ms 16636 KB Output is correct
101 Correct 98 ms 16536 KB Output is correct
102 Correct 98 ms 16620 KB Output is correct
103 Correct 104 ms 16640 KB Output is correct
104 Correct 98 ms 16580 KB Output is correct
105 Correct 99 ms 16632 KB Output is correct
106 Correct 95 ms 16836 KB Output is correct
107 Correct 94 ms 16736 KB Output is correct
108 Correct 96 ms 16728 KB Output is correct
109 Correct 98 ms 16716 KB Output is correct
110 Correct 95 ms 16828 KB Output is correct
111 Correct 94 ms 16828 KB Output is correct
112 Correct 96 ms 16836 KB Output is correct
113 Correct 95 ms 16824 KB Output is correct
114 Correct 102 ms 16836 KB Output is correct
115 Correct 117 ms 16836 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 14668 KB Output is correct
2 Correct 7 ms 14696 KB Output is correct
3 Correct 7 ms 14668 KB Output is correct
4 Correct 7 ms 14668 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 8 ms 14656 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 7 ms 14672 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14664 KB Output is correct
11 Correct 7 ms 14588 KB Output is correct
12 Correct 7 ms 14668 KB Output is correct
13 Correct 10 ms 14752 KB Output is correct
14 Correct 38 ms 15088 KB Output is correct
15 Correct 64 ms 15476 KB Output is correct
16 Correct 93 ms 15852 KB Output is correct
17 Correct 88 ms 15812 KB Output is correct
18 Correct 85 ms 15820 KB Output is correct
19 Correct 89 ms 15856 KB Output is correct
20 Correct 88 ms 15812 KB Output is correct
21 Correct 98 ms 15852 KB Output is correct
22 Correct 85 ms 15772 KB Output is correct
23 Correct 97 ms 15824 KB Output is correct
24 Correct 84 ms 15796 KB Output is correct
25 Correct 85 ms 15848 KB Output is correct
26 Correct 8 ms 14668 KB Output is correct
27 Correct 8 ms 14668 KB Output is correct
28 Correct 9 ms 14668 KB Output is correct
29 Correct 36 ms 15068 KB Output is correct
30 Correct 66 ms 15472 KB Output is correct
31 Correct 87 ms 15832 KB Output is correct
32 Correct 86 ms 15816 KB Output is correct
33 Correct 89 ms 15848 KB Output is correct
34 Correct 96 ms 15848 KB Output is correct
35 Correct 91 ms 15852 KB Output is correct
36 Correct 108 ms 15852 KB Output is correct
37 Correct 91 ms 15856 KB Output is correct
38 Correct 90 ms 15860 KB Output is correct
39 Correct 89 ms 15896 KB Output is correct
40 Correct 90 ms 15856 KB Output is correct
41 Correct 7 ms 14668 KB Output is correct
42 Correct 7 ms 14668 KB Output is correct
43 Correct 7 ms 14668 KB Output is correct
44 Correct 10 ms 14688 KB Output is correct
45 Correct 11 ms 14744 KB Output is correct
46 Correct 10 ms 14676 KB Output is correct
47 Correct 21 ms 14796 KB Output is correct
48 Correct 24 ms 14908 KB Output is correct
49 Correct 35 ms 15052 KB Output is correct
50 Correct 70 ms 15436 KB Output is correct
51 Correct 108 ms 15864 KB Output is correct
52 Correct 98 ms 15856 KB Output is correct
53 Correct 92 ms 15756 KB Output is correct
54 Correct 95 ms 15852 KB Output is correct
55 Correct 93 ms 15840 KB Output is correct
56 Correct 105 ms 15764 KB Output is correct
57 Correct 94 ms 15864 KB Output is correct
58 Correct 91 ms 15820 KB Output is correct
59 Correct 93 ms 15876 KB Output is correct
60 Correct 97 ms 15820 KB Output is correct
61 Correct 114 ms 15768 KB Output is correct
62 Correct 100 ms 15812 KB Output is correct
63 Correct 97 ms 15856 KB Output is correct
64 Correct 97 ms 15860 KB Output is correct
65 Correct 95 ms 15816 KB Output is correct
66 Correct 103 ms 15860 KB Output is correct
67 Correct 93 ms 15800 KB Output is correct
68 Correct 91 ms 15736 KB Output is correct
69 Correct 114 ms 15804 KB Output is correct
70 Correct 116 ms 15840 KB Output is correct
71 Correct 23 ms 14796 KB Output is correct
72 Correct 23 ms 14796 KB Output is correct
73 Correct 21 ms 14812 KB Output is correct
74 Correct 22 ms 14912 KB Output is correct
75 Correct 22 ms 14900 KB Output is correct
76 Correct 38 ms 15052 KB Output is correct
77 Correct 45 ms 15108 KB Output is correct
78 Correct 45 ms 15032 KB Output is correct
79 Correct 39 ms 15008 KB Output is correct
80 Correct 47 ms 15052 KB Output is correct
81 Correct 71 ms 15512 KB Output is correct
82 Correct 70 ms 15520 KB Output is correct
83 Correct 70 ms 15508 KB Output is correct
84 Correct 82 ms 15516 KB Output is correct
85 Correct 69 ms 15436 KB Output is correct
86 Correct 70 ms 15524 KB Output is correct
87 Correct 70 ms 15436 KB Output is correct
88 Correct 71 ms 15684 KB Output is correct
89 Correct 72 ms 15552 KB Output is correct
90 Correct 92 ms 15520 KB Output is correct
91 Correct 107 ms 16244 KB Output is correct
92 Correct 107 ms 16252 KB Output is correct
93 Correct 105 ms 16284 KB Output is correct
94 Correct 100 ms 16196 KB Output is correct
95 Correct 101 ms 16224 KB Output is correct
96 Correct 99 ms 16608 KB Output is correct
97 Correct 101 ms 16636 KB Output is correct
98 Correct 100 ms 16656 KB Output is correct
99 Correct 98 ms 16624 KB Output is correct
100 Correct 98 ms 16636 KB Output is correct
101 Correct 98 ms 16536 KB Output is correct
102 Correct 98 ms 16620 KB Output is correct
103 Correct 104 ms 16640 KB Output is correct
104 Correct 98 ms 16580 KB Output is correct
105 Correct 99 ms 16632 KB Output is correct
106 Correct 95 ms 16836 KB Output is correct
107 Correct 94 ms 16736 KB Output is correct
108 Correct 96 ms 16728 KB Output is correct
109 Correct 98 ms 16716 KB Output is correct
110 Correct 95 ms 16828 KB Output is correct
111 Correct 94 ms 16828 KB Output is correct
112 Correct 96 ms 16836 KB Output is correct
113 Correct 95 ms 16824 KB Output is correct
114 Correct 102 ms 16836 KB Output is correct
115 Correct 117 ms 16836 KB Output is correct
116 Correct 656 ms 16492 KB Output is correct
117 Correct 654 ms 16484 KB Output is correct
118 Correct 2948 ms 16772 KB Output is correct
119 Correct 3242 ms 16784 KB Output is correct
120 Correct 3257 ms 16768 KB Output is correct
121 Correct 6628 ms 16976 KB Output is correct
122 Correct 6540 ms 17068 KB Output is correct
123 Execution timed out 7073 ms 16768 KB Time limit exceeded
124 Halted 0 ms 0 KB -