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Submission #253502

# Submission time Handle Problem Language Result Execution time Memory
253502 2020-07-28T06:07:01 Z Erkhemkhuu Arranging Shoes (IOI19_shoes) C++17
85 / 100
 94 ms 6776 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define F first
#define S second
const ll N = 5005;
ll count_swaps(vector <int> vc) {
    ll n, i, res, cur, j, k;
    n = vc.size();
    set <ll> cnt;
    for(auto &x: vc)
        cnt.insert(abs(x));
    res = 0;
    if(cnt.size() == 1) {
        vector <ll> left;
        for(i = 0; i < n; i++)
            if(vc[i] < 0) left.pb(i);
        for(i = 0; i < n / 2; i++)
            res += (abs(left[i] - (i + i)));
        return res;
    }
    if(n <= N) {
        for(i = 0; i < n; i += 2) {
            for(j = i + 1; j < n; j++) {
                if(-vc[i] == vc[j]) {
                    for(k = j; k >= i + 2; k--) {
                        swap(vc[k], vc[k - 1]);
                        res++;
                    }
                    break;
                }
            }
            res += (!(abs(vc[i]) == abs(vc[i + 1]) && vc[i] < vc[i + 1]));
        }
        return res;
    }
    res = 1ll * (n / 2) * ((n / 2) - 1) / 2;
    return res;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:10:19: warning: unused variable 'cur' [-Wunused-variable]
     ll n, i, res, cur, j, k;
                   ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 3 ms 640 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 29 ms 3064 KB Output is correct
23 Correct 29 ms 3064 KB Output is correct
24 Correct 30 ms 3064 KB Output is correct
25 Correct 26 ms 3056 KB Output is correct
26 Correct 29 ms 3056 KB Output is correct
27 Correct 28 ms 3064 KB Output is correct
28 Correct 28 ms 3056 KB Output is correct
29 Correct 27 ms 3064 KB Output is correct
30 Correct 28 ms 3064 KB Output is correct
31 Correct 29 ms 3064 KB Output is correct
32 Correct 27 ms 3056 KB Output is correct
33 Correct 28 ms 3056 KB Output is correct
34 Correct 27 ms 3060 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 27 ms 3064 KB Output is correct
38 Correct 29 ms 3056 KB Output is correct
39 Correct 28 ms 3064 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 94 ms 6520 KB Output is correct
6 Correct 57 ms 2296 KB Output is correct
7 Correct 93 ms 6776 KB Output is correct
8 Correct 29 ms 1916 KB Output is correct
9 Correct 87 ms 6520 KB Output is correct
10 Correct 87 ms 4216 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 3 ms 384 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 2 ms 384 KB Output is correct
44 Correct 2 ms 384 KB Output is correct
45 Correct 1 ms 384 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 2 ms 384 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 1 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 0 ms 256 KB Output is correct
41 Correct 1 ms 256 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 0 ms 256 KB Output is correct
45 Correct 0 ms 256 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 1 ms 256 KB Output is correct
50 Correct 0 ms 256 KB Output is correct
51 Correct 0 ms 256 KB Output is correct
52 Correct 1 ms 384 KB Output is correct
53 Correct 1 ms 384 KB Output is correct
54 Correct 3 ms 640 KB Output is correct
55 Correct 3 ms 640 KB Output is correct
56 Correct 29 ms 3064 KB Output is correct
57 Correct 29 ms 3064 KB Output is correct
58 Correct 30 ms 3064 KB Output is correct
59 Correct 26 ms 3056 KB Output is correct
60 Correct 29 ms 3056 KB Output is correct
61 Correct 28 ms 3064 KB Output is correct
62 Correct 28 ms 3056 KB Output is correct
63 Correct 27 ms 3064 KB Output is correct
64 Correct 28 ms 3064 KB Output is correct
65 Correct 29 ms 3064 KB Output is correct
66 Correct 27 ms 3056 KB Output is correct
67 Correct 28 ms 3056 KB Output is correct
68 Correct 27 ms 3060 KB Output is correct
69 Correct 0 ms 256 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 27 ms 3064 KB Output is correct
72 Correct 29 ms 3056 KB Output is correct
73 Correct 28 ms 3064 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 0 ms 256 KB Output is correct
76 Correct 0 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 94 ms 6520 KB Output is correct
79 Correct 57 ms 2296 KB Output is correct
80 Correct 93 ms 6776 KB Output is correct
81 Correct 29 ms 1916 KB Output is correct
82 Correct 87 ms 6520 KB Output is correct
83 Correct 87 ms 4216 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 1 ms 256 KB Output is correct
86 Correct 1 ms 256 KB Output is correct
87 Correct 1 ms 384 KB Output is correct
88 Correct 3 ms 384 KB Output is correct
89 Correct 1 ms 384 KB Output is correct
90 Correct 2 ms 384 KB Output is correct
91 Correct 2 ms 384 KB Output is correct
92 Correct 1 ms 384 KB Output is correct
93 Correct 1 ms 384 KB Output is correct
94 Correct 2 ms 384 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 1 ms 384 KB Output is correct
98 Correct 1 ms 384 KB Output is correct
99 Correct 2 ms 384 KB Output is correct
100 Correct 1 ms 384 KB Output is correct
101 Incorrect 7 ms 896 KB Output isn't correct
102 Halted 0 ms 0 KB -