답안 #526206

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
526206 2022-02-13T22:56:15 Z Plurm Diversity (CEOI21_diversity) C++11
64 / 100
7000 ms 17088 KB
#pragma GCC optimize("Ofast")
#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 = 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);
      |     ~~~~~^~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14668 KB Output is correct
2 Correct 8 ms 14668 KB Output is correct
3 Correct 8 ms 14668 KB Output is correct
4 Correct 10 ms 14716 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 7 ms 14668 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 9 ms 14668 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14668 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14592 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 9 ms 14748 KB Output is correct
4 Correct 34 ms 15092 KB Output is correct
5 Correct 65 ms 15476 KB Output is correct
6 Correct 89 ms 15852 KB Output is correct
7 Correct 98 ms 15808 KB Output is correct
8 Correct 92 ms 15908 KB Output is correct
9 Correct 88 ms 15856 KB Output is correct
10 Correct 90 ms 15812 KB Output is correct
11 Correct 95 ms 15856 KB Output is correct
12 Correct 88 ms 15852 KB Output is correct
13 Correct 89 ms 15820 KB Output is correct
14 Correct 96 ms 15824 KB Output is correct
15 Correct 107 ms 15792 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14592 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 9 ms 14748 KB Output is correct
4 Correct 34 ms 15092 KB Output is correct
5 Correct 65 ms 15476 KB Output is correct
6 Correct 89 ms 15852 KB Output is correct
7 Correct 98 ms 15808 KB Output is correct
8 Correct 92 ms 15908 KB Output is correct
9 Correct 88 ms 15856 KB Output is correct
10 Correct 90 ms 15812 KB Output is correct
11 Correct 95 ms 15856 KB Output is correct
12 Correct 88 ms 15852 KB Output is correct
13 Correct 89 ms 15820 KB Output is correct
14 Correct 96 ms 15824 KB Output is correct
15 Correct 107 ms 15792 KB Output is correct
16 Correct 6 ms 14668 KB Output is correct
17 Correct 7 ms 14668 KB Output is correct
18 Correct 9 ms 14668 KB Output is correct
19 Correct 34 ms 15084 KB Output is correct
20 Correct 63 ms 15436 KB Output is correct
21 Correct 98 ms 15852 KB Output is correct
22 Correct 104 ms 15852 KB Output is correct
23 Correct 94 ms 15852 KB Output is correct
24 Correct 91 ms 15768 KB Output is correct
25 Correct 89 ms 15820 KB Output is correct
26 Correct 92 ms 15852 KB Output is correct
27 Correct 90 ms 15812 KB Output is correct
28 Correct 89 ms 15940 KB Output is correct
29 Correct 92 ms 15764 KB Output is correct
30 Correct 89 ms 15852 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14592 KB Output is correct
2 Correct 7 ms 14668 KB Output is correct
3 Correct 9 ms 14748 KB Output is correct
4 Correct 34 ms 15092 KB Output is correct
5 Correct 65 ms 15476 KB Output is correct
6 Correct 89 ms 15852 KB Output is correct
7 Correct 98 ms 15808 KB Output is correct
8 Correct 92 ms 15908 KB Output is correct
9 Correct 88 ms 15856 KB Output is correct
10 Correct 90 ms 15812 KB Output is correct
11 Correct 95 ms 15856 KB Output is correct
12 Correct 88 ms 15852 KB Output is correct
13 Correct 89 ms 15820 KB Output is correct
14 Correct 96 ms 15824 KB Output is correct
15 Correct 107 ms 15792 KB Output is correct
16 Correct 6 ms 14668 KB Output is correct
17 Correct 7 ms 14668 KB Output is correct
18 Correct 9 ms 14668 KB Output is correct
19 Correct 34 ms 15084 KB Output is correct
20 Correct 63 ms 15436 KB Output is correct
21 Correct 98 ms 15852 KB Output is correct
22 Correct 104 ms 15852 KB Output is correct
23 Correct 94 ms 15852 KB Output is correct
24 Correct 91 ms 15768 KB Output is correct
25 Correct 89 ms 15820 KB Output is correct
26 Correct 92 ms 15852 KB Output is correct
27 Correct 90 ms 15812 KB Output is correct
28 Correct 89 ms 15940 KB Output is correct
29 Correct 92 ms 15764 KB Output is correct
30 Correct 89 ms 15852 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 14720 KB Output is correct
34 Correct 10 ms 14632 KB Output is correct
35 Correct 10 ms 14752 KB Output is correct
36 Correct 10 ms 14748 KB Output is correct
37 Correct 28 ms 14796 KB Output is correct
38 Correct 22 ms 14900 KB Output is correct
39 Correct 37 ms 15052 KB Output is correct
40 Correct 65 ms 15472 KB Output is correct
41 Correct 94 ms 15852 KB Output is correct
42 Correct 105 ms 15756 KB Output is correct
43 Correct 98 ms 15812 KB Output is correct
44 Correct 97 ms 15860 KB Output is correct
45 Correct 96 ms 15852 KB Output is correct
46 Correct 95 ms 15856 KB Output is correct
47 Correct 94 ms 15940 KB Output is correct
48 Correct 101 ms 15812 KB Output is correct
49 Correct 97 ms 15864 KB Output is correct
50 Correct 106 ms 15864 KB Output is correct
51 Correct 96 ms 15860 KB Output is correct
52 Correct 118 ms 15856 KB Output is correct
53 Correct 107 ms 15856 KB Output is correct
54 Correct 96 ms 15880 KB Output is correct
55 Correct 104 ms 15860 KB Output is correct
56 Correct 118 ms 15828 KB Output is correct
57 Correct 98 ms 15868 KB Output is correct
58 Correct 93 ms 15860 KB Output is correct
59 Correct 100 ms 15964 KB Output is correct
60 Correct 102 ms 15860 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14668 KB Output is correct
2 Correct 8 ms 14668 KB Output is correct
3 Correct 8 ms 14668 KB Output is correct
4 Correct 10 ms 14716 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 7 ms 14668 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 9 ms 14668 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14668 KB Output is correct
11 Correct 7 ms 14592 KB Output is correct
12 Correct 7 ms 14668 KB Output is correct
13 Correct 9 ms 14748 KB Output is correct
14 Correct 34 ms 15092 KB Output is correct
15 Correct 65 ms 15476 KB Output is correct
16 Correct 89 ms 15852 KB Output is correct
17 Correct 98 ms 15808 KB Output is correct
18 Correct 92 ms 15908 KB Output is correct
19 Correct 88 ms 15856 KB Output is correct
20 Correct 90 ms 15812 KB Output is correct
21 Correct 95 ms 15856 KB Output is correct
22 Correct 88 ms 15852 KB Output is correct
23 Correct 89 ms 15820 KB Output is correct
24 Correct 96 ms 15824 KB Output is correct
25 Correct 107 ms 15792 KB Output is correct
26 Correct 6 ms 14668 KB Output is correct
27 Correct 7 ms 14668 KB Output is correct
28 Correct 9 ms 14668 KB Output is correct
29 Correct 34 ms 15084 KB Output is correct
30 Correct 63 ms 15436 KB Output is correct
31 Correct 98 ms 15852 KB Output is correct
32 Correct 104 ms 15852 KB Output is correct
33 Correct 94 ms 15852 KB Output is correct
34 Correct 91 ms 15768 KB Output is correct
35 Correct 89 ms 15820 KB Output is correct
36 Correct 92 ms 15852 KB Output is correct
37 Correct 90 ms 15812 KB Output is correct
38 Correct 89 ms 15940 KB Output is correct
39 Correct 92 ms 15764 KB Output is correct
40 Correct 89 ms 15852 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 14720 KB Output is correct
44 Correct 10 ms 14632 KB Output is correct
45 Correct 10 ms 14752 KB Output is correct
46 Correct 10 ms 14748 KB Output is correct
47 Correct 28 ms 14796 KB Output is correct
48 Correct 22 ms 14900 KB Output is correct
49 Correct 37 ms 15052 KB Output is correct
50 Correct 65 ms 15472 KB Output is correct
51 Correct 94 ms 15852 KB Output is correct
52 Correct 105 ms 15756 KB Output is correct
53 Correct 98 ms 15812 KB Output is correct
54 Correct 97 ms 15860 KB Output is correct
55 Correct 96 ms 15852 KB Output is correct
56 Correct 95 ms 15856 KB Output is correct
57 Correct 94 ms 15940 KB Output is correct
58 Correct 101 ms 15812 KB Output is correct
59 Correct 97 ms 15864 KB Output is correct
60 Correct 106 ms 15864 KB Output is correct
61 Correct 96 ms 15860 KB Output is correct
62 Correct 118 ms 15856 KB Output is correct
63 Correct 107 ms 15856 KB Output is correct
64 Correct 96 ms 15880 KB Output is correct
65 Correct 104 ms 15860 KB Output is correct
66 Correct 118 ms 15828 KB Output is correct
67 Correct 98 ms 15868 KB Output is correct
68 Correct 93 ms 15860 KB Output is correct
69 Correct 100 ms 15964 KB Output is correct
70 Correct 102 ms 15860 KB Output is correct
71 Correct 23 ms 14796 KB Output is correct
72 Correct 23 ms 14856 KB Output is correct
73 Correct 22 ms 14900 KB Output is correct
74 Correct 23 ms 14908 KB Output is correct
75 Correct 22 ms 14900 KB Output is correct
76 Correct 39 ms 15052 KB Output is correct
77 Correct 40 ms 15076 KB Output is correct
78 Correct 46 ms 15108 KB Output is correct
79 Correct 38 ms 15052 KB Output is correct
80 Correct 37 ms 15100 KB Output is correct
81 Correct 68 ms 15472 KB Output is correct
82 Correct 70 ms 15508 KB Output is correct
83 Correct 71 ms 15508 KB Output is correct
84 Correct 69 ms 15516 KB Output is correct
85 Correct 69 ms 15508 KB Output is correct
86 Correct 71 ms 15564 KB Output is correct
87 Correct 72 ms 15564 KB Output is correct
88 Correct 71 ms 15532 KB Output is correct
89 Correct 71 ms 15504 KB Output is correct
90 Correct 71 ms 15568 KB Output is correct
91 Correct 104 ms 16252 KB Output is correct
92 Correct 101 ms 16248 KB Output is correct
93 Correct 125 ms 16196 KB Output is correct
94 Correct 98 ms 16204 KB Output is correct
95 Correct 98 ms 16232 KB Output is correct
96 Correct 103 ms 16640 KB Output is correct
97 Correct 95 ms 16588 KB Output is correct
98 Correct 111 ms 16600 KB Output is correct
99 Correct 96 ms 16588 KB Output is correct
100 Correct 96 ms 16632 KB Output is correct
101 Correct 101 ms 16640 KB Output is correct
102 Correct 98 ms 16636 KB Output is correct
103 Correct 113 ms 16640 KB Output is correct
104 Correct 97 ms 16540 KB Output is correct
105 Correct 115 ms 16580 KB Output is correct
106 Correct 97 ms 16836 KB Output is correct
107 Correct 108 ms 16836 KB Output is correct
108 Correct 94 ms 16836 KB Output is correct
109 Correct 95 ms 16836 KB Output is correct
110 Correct 102 ms 16776 KB Output is correct
111 Correct 106 ms 16960 KB Output is correct
112 Correct 94 ms 16836 KB Output is correct
113 Correct 126 ms 16836 KB Output is correct
114 Correct 94 ms 16832 KB Output is correct
115 Correct 117 ms 16836 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14668 KB Output is correct
2 Correct 8 ms 14668 KB Output is correct
3 Correct 8 ms 14668 KB Output is correct
4 Correct 10 ms 14716 KB Output is correct
5 Correct 7 ms 14668 KB Output is correct
6 Correct 7 ms 14668 KB Output is correct
7 Correct 7 ms 14668 KB Output is correct
8 Correct 9 ms 14668 KB Output is correct
9 Correct 7 ms 14668 KB Output is correct
10 Correct 7 ms 14668 KB Output is correct
11 Correct 7 ms 14592 KB Output is correct
12 Correct 7 ms 14668 KB Output is correct
13 Correct 9 ms 14748 KB Output is correct
14 Correct 34 ms 15092 KB Output is correct
15 Correct 65 ms 15476 KB Output is correct
16 Correct 89 ms 15852 KB Output is correct
17 Correct 98 ms 15808 KB Output is correct
18 Correct 92 ms 15908 KB Output is correct
19 Correct 88 ms 15856 KB Output is correct
20 Correct 90 ms 15812 KB Output is correct
21 Correct 95 ms 15856 KB Output is correct
22 Correct 88 ms 15852 KB Output is correct
23 Correct 89 ms 15820 KB Output is correct
24 Correct 96 ms 15824 KB Output is correct
25 Correct 107 ms 15792 KB Output is correct
26 Correct 6 ms 14668 KB Output is correct
27 Correct 7 ms 14668 KB Output is correct
28 Correct 9 ms 14668 KB Output is correct
29 Correct 34 ms 15084 KB Output is correct
30 Correct 63 ms 15436 KB Output is correct
31 Correct 98 ms 15852 KB Output is correct
32 Correct 104 ms 15852 KB Output is correct
33 Correct 94 ms 15852 KB Output is correct
34 Correct 91 ms 15768 KB Output is correct
35 Correct 89 ms 15820 KB Output is correct
36 Correct 92 ms 15852 KB Output is correct
37 Correct 90 ms 15812 KB Output is correct
38 Correct 89 ms 15940 KB Output is correct
39 Correct 92 ms 15764 KB Output is correct
40 Correct 89 ms 15852 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 14720 KB Output is correct
44 Correct 10 ms 14632 KB Output is correct
45 Correct 10 ms 14752 KB Output is correct
46 Correct 10 ms 14748 KB Output is correct
47 Correct 28 ms 14796 KB Output is correct
48 Correct 22 ms 14900 KB Output is correct
49 Correct 37 ms 15052 KB Output is correct
50 Correct 65 ms 15472 KB Output is correct
51 Correct 94 ms 15852 KB Output is correct
52 Correct 105 ms 15756 KB Output is correct
53 Correct 98 ms 15812 KB Output is correct
54 Correct 97 ms 15860 KB Output is correct
55 Correct 96 ms 15852 KB Output is correct
56 Correct 95 ms 15856 KB Output is correct
57 Correct 94 ms 15940 KB Output is correct
58 Correct 101 ms 15812 KB Output is correct
59 Correct 97 ms 15864 KB Output is correct
60 Correct 106 ms 15864 KB Output is correct
61 Correct 96 ms 15860 KB Output is correct
62 Correct 118 ms 15856 KB Output is correct
63 Correct 107 ms 15856 KB Output is correct
64 Correct 96 ms 15880 KB Output is correct
65 Correct 104 ms 15860 KB Output is correct
66 Correct 118 ms 15828 KB Output is correct
67 Correct 98 ms 15868 KB Output is correct
68 Correct 93 ms 15860 KB Output is correct
69 Correct 100 ms 15964 KB Output is correct
70 Correct 102 ms 15860 KB Output is correct
71 Correct 23 ms 14796 KB Output is correct
72 Correct 23 ms 14856 KB Output is correct
73 Correct 22 ms 14900 KB Output is correct
74 Correct 23 ms 14908 KB Output is correct
75 Correct 22 ms 14900 KB Output is correct
76 Correct 39 ms 15052 KB Output is correct
77 Correct 40 ms 15076 KB Output is correct
78 Correct 46 ms 15108 KB Output is correct
79 Correct 38 ms 15052 KB Output is correct
80 Correct 37 ms 15100 KB Output is correct
81 Correct 68 ms 15472 KB Output is correct
82 Correct 70 ms 15508 KB Output is correct
83 Correct 71 ms 15508 KB Output is correct
84 Correct 69 ms 15516 KB Output is correct
85 Correct 69 ms 15508 KB Output is correct
86 Correct 71 ms 15564 KB Output is correct
87 Correct 72 ms 15564 KB Output is correct
88 Correct 71 ms 15532 KB Output is correct
89 Correct 71 ms 15504 KB Output is correct
90 Correct 71 ms 15568 KB Output is correct
91 Correct 104 ms 16252 KB Output is correct
92 Correct 101 ms 16248 KB Output is correct
93 Correct 125 ms 16196 KB Output is correct
94 Correct 98 ms 16204 KB Output is correct
95 Correct 98 ms 16232 KB Output is correct
96 Correct 103 ms 16640 KB Output is correct
97 Correct 95 ms 16588 KB Output is correct
98 Correct 111 ms 16600 KB Output is correct
99 Correct 96 ms 16588 KB Output is correct
100 Correct 96 ms 16632 KB Output is correct
101 Correct 101 ms 16640 KB Output is correct
102 Correct 98 ms 16636 KB Output is correct
103 Correct 113 ms 16640 KB Output is correct
104 Correct 97 ms 16540 KB Output is correct
105 Correct 115 ms 16580 KB Output is correct
106 Correct 97 ms 16836 KB Output is correct
107 Correct 108 ms 16836 KB Output is correct
108 Correct 94 ms 16836 KB Output is correct
109 Correct 95 ms 16836 KB Output is correct
110 Correct 102 ms 16776 KB Output is correct
111 Correct 106 ms 16960 KB Output is correct
112 Correct 94 ms 16836 KB Output is correct
113 Correct 126 ms 16836 KB Output is correct
114 Correct 94 ms 16832 KB Output is correct
115 Correct 117 ms 16836 KB Output is correct
116 Correct 708 ms 16488 KB Output is correct
117 Correct 713 ms 16480 KB Output is correct
118 Correct 3538 ms 16828 KB Output is correct
119 Correct 3441 ms 16780 KB Output is correct
120 Correct 3456 ms 16768 KB Output is correct
121 Correct 6767 ms 17088 KB Output is correct
122 Correct 6918 ms 16968 KB Output is correct
123 Execution timed out 7096 ms 16764 KB Time limit exceeded
124 Halted 0 ms 0 KB -