oj.uz

Submission #620443

# Submission time Handle Problem Language Result Execution time Memory
620443 2022-08-03T06:04:12 Z cheissmart Arranging Shoes (IOI19_shoes) C++14
100 / 100
 93 ms 16676 KB 
#include "shoes.h"
#include <bits/stdc++.h>
#define IO_OP ios::sync_with_stdio(0), cin.tie(0)
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7, N = 2e5 + 7;

int bit[N];

void add(int pos, int val) {
	for(; pos < N; pos += pos & -pos)
		bit[pos] += val;
}

int qry(int pos) {
	int res = 0;
	for(; pos; pos -= pos & -pos)
		res += bit[pos];
	return res;
}

ll count_swaps(vi s) {
	int n = SZ(s) / 2;
	V<vi> posl(n);
	V<vi> posr(n);
	for(int i = 0; i < n * 2; i++) {
		if(s[i] < 0) {
			posl[-s[i] - 1].PB(i);
		} else {
			posr[s[i] - 1].PB(i);
		}
	}
	ll ans = 0;
	V<pi> aux;
	for(int i = 0; i < n; i++) {
		assert(SZ(posl[i]) == SZ(posr[i]));
		for(int j = 0; j < SZ(posl[i]); j++) {
			if(posl[i][j] > posr[i][j]) {
				ans++;
				swap(posl[i][j], posr[i][j]);
			}
			aux.EB(posl[i][j], posr[i][j]);
		}
	}
	sort(ALL(aux));
	assert(SZ(aux) == n);
	vi p(2 * n);
	for(int i = 0; i < n; i++) {
		p[aux[i].F] = i * 2 + 1;
		p[aux[i].S] = i * 2 + 2;
	}
	for(int i = 2 * n - 1; i >= 0; i--) {
		ans += qry(p[i]);
		add(p[i], 1);
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 304 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 312 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 312 KB Output is correct
36 Correct 1 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 4 ms 1364 KB Output is correct
21 Correct 4 ms 1492 KB Output is correct
22 Correct 34 ms 11024 KB Output is correct
23 Correct 36 ms 11076 KB Output is correct
24 Correct 35 ms 11096 KB Output is correct
25 Correct 38 ms 10796 KB Output is correct
26 Correct 35 ms 11064 KB Output is correct
27 Correct 30 ms 10840 KB Output is correct
28 Correct 32 ms 11056 KB Output is correct
29 Correct 32 ms 11044 KB Output is correct
30 Correct 30 ms 11036 KB Output is correct
31 Correct 34 ms 11068 KB Output is correct
32 Correct 31 ms 11056 KB Output is correct
33 Correct 30 ms 10812 KB Output is correct
34 Correct 30 ms 11036 KB Output is correct
35 Correct 1 ms 308 KB Output is correct
36 Correct 0 ms 308 KB Output is correct
37 Correct 30 ms 11048 KB Output is correct
38 Correct 32 ms 11048 KB Output is correct
39 Correct 32 ms 11040 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 57 ms 16424 KB Output is correct
6 Correct 49 ms 11688 KB Output is correct
7 Correct 55 ms 16448 KB Output is correct
8 Correct 37 ms 11144 KB Output is correct
9 Correct 59 ms 16424 KB Output is correct
10 Correct 54 ms 13444 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 304 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 312 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 312 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 308 KB Output is correct
40 Correct 1 ms 316 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 444 KB Output is correct
43 Correct 1 ms 444 KB Output is correct
44 Correct 2 ms 468 KB Output is correct
45 Correct 1 ms 444 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 2 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 444 KB Output is correct
50 Correct 1 ms 448 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 468 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 304 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 312 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 312 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 312 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 0 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 312 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 4 ms 1364 KB Output is correct
55 Correct 4 ms 1492 KB Output is correct
56 Correct 34 ms 11024 KB Output is correct
57 Correct 36 ms 11076 KB Output is correct
58 Correct 35 ms 11096 KB Output is correct
59 Correct 38 ms 10796 KB Output is correct
60 Correct 35 ms 11064 KB Output is correct
61 Correct 30 ms 10840 KB Output is correct
62 Correct 32 ms 11056 KB Output is correct
63 Correct 32 ms 11044 KB Output is correct
64 Correct 30 ms 11036 KB Output is correct
65 Correct 34 ms 11068 KB Output is correct
66 Correct 31 ms 11056 KB Output is correct
67 Correct 30 ms 10812 KB Output is correct
68 Correct 30 ms 11036 KB Output is correct
69 Correct 1 ms 308 KB Output is correct
70 Correct 0 ms 308 KB Output is correct
71 Correct 30 ms 11048 KB Output is correct
72 Correct 32 ms 11048 KB Output is correct
73 Correct 32 ms 11040 KB Output is correct
74 Correct 0 ms 340 KB Output is correct
75 Correct 0 ms 340 KB Output is correct
76 Correct 0 ms 340 KB Output is correct
77 Correct 0 ms 340 KB Output is correct
78 Correct 57 ms 16424 KB Output is correct
79 Correct 49 ms 11688 KB Output is correct
80 Correct 55 ms 16448 KB Output is correct
81 Correct 37 ms 11144 KB Output is correct
82 Correct 59 ms 16424 KB Output is correct
83 Correct 54 ms 13444 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 1 ms 340 KB Output is correct
86 Correct 1 ms 308 KB Output is correct
87 Correct 1 ms 316 KB Output is correct
88 Correct 1 ms 468 KB Output is correct
89 Correct 1 ms 444 KB Output is correct
90 Correct 1 ms 444 KB Output is correct
91 Correct 2 ms 468 KB Output is correct
92 Correct 1 ms 444 KB Output is correct
93 Correct 1 ms 340 KB Output is correct
94 Correct 2 ms 340 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 444 KB Output is correct
97 Correct 1 ms 448 KB Output is correct
98 Correct 1 ms 340 KB Output is correct
99 Correct 1 ms 468 KB Output is correct
100 Correct 1 ms 468 KB Output is correct
101 Correct 6 ms 1876 KB Output is correct
102 Correct 5 ms 1492 KB Output is correct
103 Correct 74 ms 16676 KB Output is correct
104 Correct 93 ms 16472 KB Output is correct
105 Correct 86 ms 13864 KB Output is correct
106 Correct 60 ms 16540 KB Output is correct
107 Correct 47 ms 11824 KB Output is correct
108 Correct 72 ms 12228 KB Output is correct
109 Correct 37 ms 11456 KB Output is correct
110 Correct 33 ms 11080 KB Output is correct
111 Correct 63 ms 15744 KB Output is correct
112 Correct 68 ms 15076 KB Output is correct
113 Correct 62 ms 11932 KB Output is correct
114 Correct 62 ms 16528 KB Output is correct
115 Correct 75 ms 16536 KB Output is correct