oj.uz

Submission #143683

# Submission time Handle Problem Language Result Execution time Memory
143683 2019-08-14T21:27:54 Z qkxwsm Arranging Shoes (IOI19_shoes) C++14
100 / 100
 145 ms 21740 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;

template<class T, class U>
void ckmin(T &a, U b)
{
	if (a > b) a = b;
}

template<class T, class U>
void ckmax(T &a, U b)
{
	if (a < b) a = b;
}

#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)
#define SZ(x) ((int) (x).size())
#define ALL(x) (x).begin(), (x).end()
#define MAXN 200013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;

int N;
vi arr;
vi lt[MAXN], rt[MAXN];
vpi pos;
int A[MAXN];
ll fen[MAXN];
ll ans;

bool cmp(pii a, pii b)
{
	return a.fi + a.se < b.fi + b.se;
}
void update(int idx, ll v)
{
	for (int e = idx + 1; e <= 2 * N; e += e & (-e)) fen[e] += v;
}
ll query(int idx)
{
	ll res = 0;
	for (int e = idx + 1; e; e -= e & (-e)) res += fen[e];
	return res;
}

ll count_swaps(vi a)
{
	arr = a;
	N = SZ(arr) >> 1;
	FOR(i, 0, 2 * N)
	{
		if (arr[i] < 0) lt[-arr[i]].PB(i);
		else rt[arr[i]].PB(i);
	}
	// cerr << "HUH\n";
	FOR(i, 0, N + 1)
	{
		FOR(j, 0, SZ(lt[i]))
		{
			pos.PB({lt[i][j], rt[i][j]});
		}
	}
	//agh look at subsequences
	//ok you sort the pairs based on where they should go
	//it breaks down into counting inversions of some stupid array, after you know where everythibng should go.
	// cerr << "HI\n";
	sort(ALL(pos), cmp);
	FOR(i, 0, N)
	{
		A[2 * i] = pos[i].fi;
		A[2 * i + 1] = pos[i].se;
	}
	FOR(i, 0, 2 * N)
	{
		ans += (i - query(A[i]));
		update(A[i], 1);
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 11 ms 9720 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 11 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9692 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 11 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9720 KB Output is correct
10 Correct 10 ms 9692 KB Output is correct
11 Correct 11 ms 9764 KB Output is correct
12 Correct 11 ms 9692 KB Output is correct
13 Correct 11 ms 9720 KB Output is correct
14 Correct 10 ms 9720 KB Output is correct
15 Correct 10 ms 9720 KB Output is correct
16 Correct 11 ms 9720 KB Output is correct
17 Correct 13 ms 9720 KB Output is correct
18 Correct 10 ms 9724 KB Output is correct
19 Correct 11 ms 9720 KB Output is correct
20 Correct 11 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 11 ms 9720 KB Output is correct
23 Correct 14 ms 9720 KB Output is correct
24 Correct 10 ms 9800 KB Output is correct
25 Correct 10 ms 9720 KB Output is correct
26 Correct 11 ms 9720 KB Output is correct
27 Correct 11 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 11 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9692 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 11 ms 9720 KB Output is correct
36 Correct 10 ms 9720 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 11 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 11 ms 9720 KB Output is correct
5 Correct 11 ms 9720 KB Output is correct
6 Correct 11 ms 9720 KB Output is correct
7 Correct 11 ms 9720 KB Output is correct
8 Correct 11 ms 9720 KB Output is correct
9 Correct 10 ms 9720 KB Output is correct
10 Correct 11 ms 9720 KB Output is correct
11 Correct 11 ms 9720 KB Output is correct
12 Correct 11 ms 9720 KB Output is correct
13 Correct 11 ms 9720 KB Output is correct
14 Correct 11 ms 9720 KB Output is correct
15 Correct 6 ms 9720 KB Output is correct
16 Correct 11 ms 9724 KB Output is correct
17 Correct 10 ms 9720 KB Output is correct
18 Correct 11 ms 9820 KB Output is correct
19 Correct 11 ms 9720 KB Output is correct
20 Correct 16 ms 10616 KB Output is correct
21 Correct 15 ms 10492 KB Output is correct
22 Correct 60 ms 16148 KB Output is correct
23 Correct 56 ms 16104 KB Output is correct
24 Correct 60 ms 16076 KB Output is correct
25 Correct 58 ms 16108 KB Output is correct
26 Correct 60 ms 16104 KB Output is correct
27 Correct 57 ms 16208 KB Output is correct
28 Correct 59 ms 16108 KB Output is correct
29 Correct 60 ms 16212 KB Output is correct
30 Correct 59 ms 16108 KB Output is correct
31 Correct 60 ms 16124 KB Output is correct
32 Correct 59 ms 16064 KB Output is correct
33 Correct 83 ms 16072 KB Output is correct
34 Correct 59 ms 16156 KB Output is correct
35 Correct 11 ms 9720 KB Output is correct
36 Correct 11 ms 9720 KB Output is correct
37 Correct 59 ms 16108 KB Output is correct
38 Correct 59 ms 16100 KB Output is correct
39 Correct 60 ms 16108 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 10 ms 9720 KB Output is correct
4 Correct 11 ms 9724 KB Output is correct
5 Correct 105 ms 21740 KB Output is correct
6 Correct 91 ms 16820 KB Output is correct
7 Correct 101 ms 21548 KB Output is correct
8 Correct 68 ms 16192 KB Output is correct
9 Correct 101 ms 21612 KB Output is correct
10 Correct 96 ms 18540 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 11 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9692 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 11 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9720 KB Output is correct
10 Correct 10 ms 9692 KB Output is correct
11 Correct 11 ms 9764 KB Output is correct
12 Correct 11 ms 9692 KB Output is correct
13 Correct 11 ms 9720 KB Output is correct
14 Correct 10 ms 9720 KB Output is correct
15 Correct 10 ms 9720 KB Output is correct
16 Correct 11 ms 9720 KB Output is correct
17 Correct 13 ms 9720 KB Output is correct
18 Correct 10 ms 9724 KB Output is correct
19 Correct 11 ms 9720 KB Output is correct
20 Correct 11 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 11 ms 9720 KB Output is correct
23 Correct 14 ms 9720 KB Output is correct
24 Correct 10 ms 9800 KB Output is correct
25 Correct 10 ms 9720 KB Output is correct
26 Correct 11 ms 9720 KB Output is correct
27 Correct 11 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 11 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9692 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 11 ms 9720 KB Output is correct
36 Correct 10 ms 9720 KB Output is correct
37 Correct 11 ms 9720 KB Output is correct
38 Correct 11 ms 9720 KB Output is correct
39 Correct 11 ms 9720 KB Output is correct
40 Correct 10 ms 9764 KB Output is correct
41 Correct 11 ms 9848 KB Output is correct
42 Correct 11 ms 9848 KB Output is correct
43 Correct 11 ms 9860 KB Output is correct
44 Correct 11 ms 9848 KB Output is correct
45 Correct 11 ms 9848 KB Output is correct
46 Correct 11 ms 9896 KB Output is correct
47 Correct 13 ms 9768 KB Output is correct
48 Correct 11 ms 9848 KB Output is correct
49 Correct 11 ms 9848 KB Output is correct
50 Correct 11 ms 9848 KB Output is correct
51 Correct 11 ms 9808 KB Output is correct
52 Correct 11 ms 9848 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 11 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9692 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 11 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9720 KB Output is correct
10 Correct 10 ms 9692 KB Output is correct
11 Correct 11 ms 9764 KB Output is correct
12 Correct 11 ms 9692 KB Output is correct
13 Correct 11 ms 9720 KB Output is correct
14 Correct 10 ms 9720 KB Output is correct
15 Correct 10 ms 9720 KB Output is correct
16 Correct 11 ms 9720 KB Output is correct
17 Correct 13 ms 9720 KB Output is correct
18 Correct 10 ms 9724 KB Output is correct
19 Correct 11 ms 9720 KB Output is correct
20 Correct 11 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 11 ms 9720 KB Output is correct
23 Correct 14 ms 9720 KB Output is correct
24 Correct 10 ms 9800 KB Output is correct
25 Correct 10 ms 9720 KB Output is correct
26 Correct 11 ms 9720 KB Output is correct
27 Correct 11 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 11 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9692 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 11 ms 9720 KB Output is correct
36 Correct 10 ms 9720 KB Output is correct
37 Correct 11 ms 9720 KB Output is correct
38 Correct 11 ms 9720 KB Output is correct
39 Correct 11 ms 9720 KB Output is correct
40 Correct 11 ms 9720 KB Output is correct
41 Correct 11 ms 9720 KB Output is correct
42 Correct 11 ms 9720 KB Output is correct
43 Correct 10 ms 9720 KB Output is correct
44 Correct 11 ms 9720 KB Output is correct
45 Correct 11 ms 9720 KB Output is correct
46 Correct 11 ms 9720 KB Output is correct
47 Correct 11 ms 9720 KB Output is correct
48 Correct 11 ms 9720 KB Output is correct
49 Correct 6 ms 9720 KB Output is correct
50 Correct 11 ms 9724 KB Output is correct
51 Correct 10 ms 9720 KB Output is correct
52 Correct 11 ms 9820 KB Output is correct
53 Correct 11 ms 9720 KB Output is correct
54 Correct 16 ms 10616 KB Output is correct
55 Correct 15 ms 10492 KB Output is correct
56 Correct 60 ms 16148 KB Output is correct
57 Correct 56 ms 16104 KB Output is correct
58 Correct 60 ms 16076 KB Output is correct
59 Correct 58 ms 16108 KB Output is correct
60 Correct 60 ms 16104 KB Output is correct
61 Correct 57 ms 16208 KB Output is correct
62 Correct 59 ms 16108 KB Output is correct
63 Correct 60 ms 16212 KB Output is correct
64 Correct 59 ms 16108 KB Output is correct
65 Correct 60 ms 16124 KB Output is correct
66 Correct 59 ms 16064 KB Output is correct
67 Correct 83 ms 16072 KB Output is correct
68 Correct 59 ms 16156 KB Output is correct
69 Correct 11 ms 9720 KB Output is correct
70 Correct 11 ms 9720 KB Output is correct
71 Correct 59 ms 16108 KB Output is correct
72 Correct 59 ms 16100 KB Output is correct
73 Correct 60 ms 16108 KB Output is correct
74 Correct 11 ms 9720 KB Output is correct
75 Correct 10 ms 9720 KB Output is correct
76 Correct 10 ms 9720 KB Output is correct
77 Correct 11 ms 9724 KB Output is correct
78 Correct 105 ms 21740 KB Output is correct
79 Correct 91 ms 16820 KB Output is correct
80 Correct 101 ms 21548 KB Output is correct
81 Correct 68 ms 16192 KB Output is correct
82 Correct 101 ms 21612 KB Output is correct
83 Correct 96 ms 18540 KB Output is correct
84 Correct 11 ms 9720 KB Output is correct
85 Correct 11 ms 9720 KB Output is correct
86 Correct 11 ms 9720 KB Output is correct
87 Correct 10 ms 9764 KB Output is correct
88 Correct 11 ms 9848 KB Output is correct
89 Correct 11 ms 9848 KB Output is correct
90 Correct 11 ms 9860 KB Output is correct
91 Correct 11 ms 9848 KB Output is correct
92 Correct 11 ms 9848 KB Output is correct
93 Correct 11 ms 9896 KB Output is correct
94 Correct 13 ms 9768 KB Output is correct
95 Correct 11 ms 9848 KB Output is correct
96 Correct 11 ms 9848 KB Output is correct
97 Correct 11 ms 9848 KB Output is correct
98 Correct 11 ms 9808 KB Output is correct
99 Correct 11 ms 9848 KB Output is correct
100 Correct 11 ms 9848 KB Output is correct
101 Correct 19 ms 11000 KB Output is correct
102 Correct 18 ms 10616 KB Output is correct
103 Correct 145 ms 21584 KB Output is correct
104 Correct 111 ms 21628 KB Output is correct
105 Correct 107 ms 18884 KB Output is correct
106 Correct 94 ms 21556 KB Output is correct
107 Correct 87 ms 16984 KB Output is correct
108 Correct 90 ms 17340 KB Output is correct
109 Correct 72 ms 16576 KB Output is correct
110 Correct 59 ms 16148 KB Output is correct
111 Correct 100 ms 20844 KB Output is correct
112 Correct 112 ms 20244 KB Output is correct
113 Correct 85 ms 16932 KB Output is correct
114 Correct 96 ms 21556 KB Output is correct
115 Correct 97 ms 21584 KB Output is correct