oj.uz

Submission #163829

# Submission time Handle Problem Language Result Execution time Memory
163829 2019-11-15T14:57:34 Z Alexa2001 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 66 ms 7244 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int Nmax = 2e5 + 5;

int n;
int F[Nmax], S[Nmax], a[Nmax], cnt[Nmax], sum_cnt[Nmax];

void norm()
{
    int i;
    for(i=1; i<=n; ++i)
        if(a[i] > 0) ++sum_cnt[a[i]];
    
    for(i=1; i<=n; ++i)
        sum_cnt[i] += sum_cnt[i-1], cnt[i] = 0;

    for(i=1; i<=n; ++i)
        if(a[i] > 0)
        {
            ++cnt[a[i]];
            a[i] = sum_cnt[a[i] - 1] + cnt[a[i]];
            S[a[i]] = i;
        }

    for(i=1; i<=n; ++i) cnt[i] = 0;

    for(i=1; i<=n; ++i)
        if(a[i] < 0)
        {
            a[i] *= -1;
            ++cnt[a[i]];
            a[i] = sum_cnt[a[i] - 1] + cnt[a[i]];
            F[a[i]] = i;
        }
}

class AIB 
{
    int a[Nmax];
    int ub(int x) { return (x&(-x)); }

public:
    void clear()
    {
        memset(a, 0, sizeof(a));
    }

    int query(int x)
    {
        int ans = 0;
        for(; x <= n; x += ub(x)) ans += a[x];
        return ans;
    }
    void update(int x)
    {
        for(; x; x -= ub(x)) a[x] ++;
    }
    void update(int x, int y)
    {
        for(; x; x-=ub(x)) a[x] --;
        for(; y; y-=ub(y)) a[y] ++;
    }
} aib;

ll solve1()
{
    ll ans = 0;
    int i;

    aib.clear();

    for(i=1; i<=n; ++i)
        if(i == max(F[a[i]], S[a[i]]))
        {
            int curr = min(F[a[i]], S[a[i]]); 
            ans += 2 * aib.query(curr);
            aib.update(curr);
        }

    aib.clear();

    for(i=1; i<=n; ++i)
        if(i == max(F[a[i]], S[a[i]]))
        {
            int curr = min(F[a[i]], S[a[i]]);
            ans += aib.query(curr);
            aib.update(curr, i);
        }

    return ans;
}   

ll solve2()
{
    int i, ans = 0;
    for(i=1; i<=n; ++i)
        ans += (F[i] > S[i]);
    return ans;
}

ll count_swaps(vector<int> s) 
{
    n = s.size();
    int i;
    for(i=1; i<=n; ++i) a[i] = s[i-1];

    norm();
    
   // for(i=1; i<=n; ++i) cerr << a[i] << ' '; cerr << "#\n";

  //  cerr << solve1() << '\n';
  //  cerr << solve2() << '\n';

    return solve1() + solve2();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1148 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1148 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 10 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1148 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1144 KB Output is correct
24 Correct 3 ms 1144 KB Output is correct
25 Correct 3 ms 1144 KB Output is correct
26 Correct 3 ms 1144 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 3 ms 1144 KB Output is correct
29 Correct 3 ms 1188 KB Output is correct
30 Correct 3 ms 1144 KB Output is correct
31 Correct 3 ms 1144 KB Output is correct
32 Correct 3 ms 1144 KB Output is correct
33 Correct 3 ms 1148 KB Output is correct
34 Correct 3 ms 1144 KB Output is correct
35 Correct 3 ms 1144 KB Output is correct
36 Correct 3 ms 1144 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1148 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1272 KB Output is correct
20 Correct 7 ms 1656 KB Output is correct
21 Correct 7 ms 1656 KB Output is correct
22 Correct 49 ms 6008 KB Output is correct
23 Correct 41 ms 7160 KB Output is correct
24 Correct 48 ms 7160 KB Output is correct
25 Correct 41 ms 6904 KB Output is correct
26 Correct 49 ms 7160 KB Output is correct
27 Correct 38 ms 7032 KB Output is correct
28 Correct 61 ms 7076 KB Output is correct
29 Correct 42 ms 7160 KB Output is correct
30 Correct 42 ms 7032 KB Output is correct
31 Correct 48 ms 7164 KB Output is correct
32 Correct 42 ms 7160 KB Output is correct
33 Correct 52 ms 6908 KB Output is correct
34 Correct 42 ms 7160 KB Output is correct
35 Correct 3 ms 1144 KB Output is correct
36 Correct 3 ms 1144 KB Output is correct
37 Correct 41 ms 7160 KB Output is correct
38 Correct 41 ms 7160 KB Output is correct
39 Correct 42 ms 7160 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 55 ms 5980 KB Output is correct
6 Correct 54 ms 7032 KB Output is correct
7 Correct 57 ms 7160 KB Output is correct
8 Correct 46 ms 7160 KB Output is correct
9 Correct 56 ms 7032 KB Output is correct
10 Correct 56 ms 7036 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1148 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1148 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 10 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1148 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1144 KB Output is correct
24 Correct 3 ms 1144 KB Output is correct
25 Correct 3 ms 1144 KB Output is correct
26 Correct 3 ms 1144 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 3 ms 1144 KB Output is correct
29 Correct 3 ms 1188 KB Output is correct
30 Correct 3 ms 1144 KB Output is correct
31 Correct 3 ms 1144 KB Output is correct
32 Correct 3 ms 1144 KB Output is correct
33 Correct 3 ms 1148 KB Output is correct
34 Correct 3 ms 1144 KB Output is correct
35 Correct 3 ms 1144 KB Output is correct
36 Correct 3 ms 1144 KB Output is correct
37 Correct 3 ms 1144 KB Output is correct
38 Correct 3 ms 1136 KB Output is correct
39 Correct 3 ms 1144 KB Output is correct
40 Correct 3 ms 1144 KB Output is correct
41 Correct 3 ms 1144 KB Output is correct
42 Correct 3 ms 1144 KB Output is correct
43 Correct 3 ms 1144 KB Output is correct
44 Correct 3 ms 1144 KB Output is correct
45 Correct 3 ms 1144 KB Output is correct
46 Correct 3 ms 1144 KB Output is correct
47 Correct 3 ms 1144 KB Output is correct
48 Correct 3 ms 1272 KB Output is correct
49 Correct 3 ms 1144 KB Output is correct
50 Correct 3 ms 1144 KB Output is correct
51 Correct 3 ms 1144 KB Output is correct
52 Correct 3 ms 1144 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1148 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1148 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 3 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 10 ms 1144 KB Output is correct
14 Correct 3 ms 1144 KB Output is correct
15 Correct 3 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 3 ms 1144 KB Output is correct
18 Correct 3 ms 1144 KB Output is correct
19 Correct 3 ms 1144 KB Output is correct
20 Correct 3 ms 1144 KB Output is correct
21 Correct 3 ms 1148 KB Output is correct
22 Correct 3 ms 1144 KB Output is correct
23 Correct 3 ms 1144 KB Output is correct
24 Correct 3 ms 1144 KB Output is correct
25 Correct 3 ms 1144 KB Output is correct
26 Correct 3 ms 1144 KB Output is correct
27 Correct 3 ms 1144 KB Output is correct
28 Correct 3 ms 1144 KB Output is correct
29 Correct 3 ms 1188 KB Output is correct
30 Correct 3 ms 1144 KB Output is correct
31 Correct 3 ms 1144 KB Output is correct
32 Correct 3 ms 1144 KB Output is correct
33 Correct 3 ms 1148 KB Output is correct
34 Correct 3 ms 1144 KB Output is correct
35 Correct 3 ms 1144 KB Output is correct
36 Correct 3 ms 1144 KB Output is correct
37 Correct 3 ms 1144 KB Output is correct
38 Correct 3 ms 1144 KB Output is correct
39 Correct 3 ms 1144 KB Output is correct
40 Correct 3 ms 1144 KB Output is correct
41 Correct 3 ms 1144 KB Output is correct
42 Correct 3 ms 1144 KB Output is correct
43 Correct 3 ms 1144 KB Output is correct
44 Correct 3 ms 1144 KB Output is correct
45 Correct 3 ms 1144 KB Output is correct
46 Correct 3 ms 1144 KB Output is correct
47 Correct 3 ms 1144 KB Output is correct
48 Correct 3 ms 1144 KB Output is correct
49 Correct 3 ms 1144 KB Output is correct
50 Correct 3 ms 1148 KB Output is correct
51 Correct 3 ms 1144 KB Output is correct
52 Correct 3 ms 1144 KB Output is correct
53 Correct 3 ms 1272 KB Output is correct
54 Correct 7 ms 1656 KB Output is correct
55 Correct 7 ms 1656 KB Output is correct
56 Correct 49 ms 6008 KB Output is correct
57 Correct 41 ms 7160 KB Output is correct
58 Correct 48 ms 7160 KB Output is correct
59 Correct 41 ms 6904 KB Output is correct
60 Correct 49 ms 7160 KB Output is correct
61 Correct 38 ms 7032 KB Output is correct
62 Correct 61 ms 7076 KB Output is correct
63 Correct 42 ms 7160 KB Output is correct
64 Correct 42 ms 7032 KB Output is correct
65 Correct 48 ms 7164 KB Output is correct
66 Correct 42 ms 7160 KB Output is correct
67 Correct 52 ms 6908 KB Output is correct
68 Correct 42 ms 7160 KB Output is correct
69 Correct 3 ms 1144 KB Output is correct
70 Correct 3 ms 1144 KB Output is correct
71 Correct 41 ms 7160 KB Output is correct
72 Correct 41 ms 7160 KB Output is correct
73 Correct 42 ms 7160 KB Output is correct
74 Correct 3 ms 1144 KB Output is correct
75 Correct 3 ms 1144 KB Output is correct
76 Correct 3 ms 1144 KB Output is correct
77 Correct 3 ms 1144 KB Output is correct
78 Correct 55 ms 5980 KB Output is correct
79 Correct 54 ms 7032 KB Output is correct
80 Correct 57 ms 7160 KB Output is correct
81 Correct 46 ms 7160 KB Output is correct
82 Correct 56 ms 7032 KB Output is correct
83 Correct 56 ms 7036 KB Output is correct
84 Correct 3 ms 1144 KB Output is correct
85 Correct 3 ms 1136 KB Output is correct
86 Correct 3 ms 1144 KB Output is correct
87 Correct 3 ms 1144 KB Output is correct
88 Correct 3 ms 1144 KB Output is correct
89 Correct 3 ms 1144 KB Output is correct
90 Correct 3 ms 1144 KB Output is correct
91 Correct 3 ms 1144 KB Output is correct
92 Correct 3 ms 1144 KB Output is correct
93 Correct 3 ms 1144 KB Output is correct
94 Correct 3 ms 1144 KB Output is correct
95 Correct 3 ms 1272 KB Output is correct
96 Correct 3 ms 1144 KB Output is correct
97 Correct 3 ms 1144 KB Output is correct
98 Correct 3 ms 1144 KB Output is correct
99 Correct 3 ms 1144 KB Output is correct
100 Correct 3 ms 1144 KB Output is correct
101 Correct 8 ms 1656 KB Output is correct
102 Correct 8 ms 1656 KB Output is correct
103 Correct 66 ms 7076 KB Output is correct
104 Correct 55 ms 7032 KB Output is correct
105 Correct 63 ms 7012 KB Output is correct
106 Correct 56 ms 7056 KB Output is correct
107 Correct 62 ms 7032 KB Output is correct
108 Correct 53 ms 7096 KB Output is correct
109 Correct 44 ms 7160 KB Output is correct
110 Correct 41 ms 7160 KB Output is correct
111 Correct 56 ms 7032 KB Output is correct
112 Correct 65 ms 7200 KB Output is correct
113 Correct 59 ms 7136 KB Output is correct
114 Correct 56 ms 7032 KB Output is correct
115 Correct 56 ms 7244 KB Output is correct