Submission #170684

# Submission time Handle Problem Language Result Execution time Memory
170684 2019-12-26T04:42:51 Z youngyojun Arranging Shoes (IOI19_shoes) C++17
100 / 100
98 ms 21204 KB
#include "shoes.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define rb(x) ((x)&(-(x)))
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int MAXN = 200055;

struct BIT {
	int d[MAXN];

	void upd(int x, int r) {
		for(x += 5; x < MAXN; x += rb(x))
			d[x] += r;
	}
	int get(int x) {
		int r = 0;
		for(x += 5; x; x -= rb(x))
			r += d[x];
		return r;
	}
} bit;

vector<int> AV[MAXN], BV[MAXN];

int A[MAXN], B[MAXN];
bitset<MAXN> chk;

ll Ans;
int N;

ll solve() {
	for(int i = 0; i < N*2; i++) {
		if(A[i] < 0) AV[-A[i]].eb(i);
		else BV[A[i]].eb(i);
	}
	for(int i = 1; i <= N; i++) {
		reverse(allv(AV[i]));
		reverse(allv(BV[i]));
	}
	for(int i = 0, x, y, cnt = 0; i < N*2; i++) if(!chk[i]) {
		chk[i] = true;
		x = A[i];
		if(x < 0) {
			B[i] = cnt++;
			AV[-x].pop_back();
			y = BV[-x].back();
			BV[-x].pop_back();
			B[y] = cnt++;
			chk[y] = true;
		} else {
			B[i] = cnt+1;
			BV[x].pop_back();
			y = AV[x].back();
			AV[x].pop_back();
			B[y] = cnt;
			cnt += 2;
			chk[y] = true;
		}
	}

	for(int i = N*2; i--;) {
		Ans += bit.get(B[i]);
		bit.upd(B[i], 1);
	}
	return Ans;
}

long long count_swaps(std::vector<int> s) {
	N = sz(s)/2;
	for(int i = 0; i < N*2; i++) A[i] = s[i];
	return solve();
}
# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 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 10 ms 9720 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 10 ms 9720 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 10 ms 9848 KB Output is correct
10 Correct 10 ms 9848 KB Output is correct
11 Correct 15 ms 9720 KB Output is correct
12 Correct 12 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 12 ms 9720 KB Output is correct
15 Correct 10 ms 9848 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9724 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9692 KB Output is correct
20 Correct 10 ms 9692 KB Output is correct
21 Correct 10 ms 9720 KB Output is correct
22 Correct 10 ms 9724 KB Output is correct
23 Correct 10 ms 9720 KB Output is correct
24 Correct 10 ms 9720 KB Output is correct
25 Correct 10 ms 9848 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 10 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 10 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9720 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 10 ms 9848 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 10 ms 9820 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 10 ms 9848 KB Output is correct
4 Correct 10 ms 9768 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 10 ms 9720 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 10 ms 9720 KB Output is correct
10 Correct 10 ms 9720 KB Output is correct
11 Correct 10 ms 9720 KB Output is correct
12 Correct 10 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 10 ms 9848 KB Output is correct
15 Correct 10 ms 9848 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 11 ms 9980 KB Output is correct
18 Correct 10 ms 9848 KB Output is correct
19 Correct 11 ms 9720 KB Output is correct
20 Correct 14 ms 10232 KB Output is correct
21 Correct 14 ms 10232 KB Output is correct
22 Correct 52 ms 14616 KB Output is correct
23 Correct 47 ms 15980 KB Output is correct
24 Correct 52 ms 15980 KB Output is correct
25 Correct 46 ms 15600 KB Output is correct
26 Correct 52 ms 15980 KB Output is correct
27 Correct 45 ms 15724 KB Output is correct
28 Correct 47 ms 15856 KB Output is correct
29 Correct 47 ms 15852 KB Output is correct
30 Correct 47 ms 15856 KB Output is correct
31 Correct 52 ms 15872 KB Output is correct
32 Correct 47 ms 15856 KB Output is correct
33 Correct 45 ms 15600 KB Output is correct
34 Correct 47 ms 15852 KB Output is correct
35 Correct 11 ms 9848 KB Output is correct
36 Correct 10 ms 9848 KB Output is correct
37 Correct 47 ms 15828 KB Output is correct
38 Correct 46 ms 15856 KB Output is correct
39 Correct 47 ms 15856 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 ms 9720 KB Output is correct
2 Correct 10 ms 9724 KB Output is correct
3 Correct 10 ms 9720 KB Output is correct
4 Correct 10 ms 9720 KB Output is correct
5 Correct 77 ms 19960 KB Output is correct
6 Correct 67 ms 16376 KB Output is correct
7 Correct 80 ms 21112 KB Output is correct
8 Correct 51 ms 15876 KB Output is correct
9 Correct 82 ms 21204 KB Output is correct
10 Correct 82 ms 18116 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 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 10 ms 9720 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 10 ms 9720 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 10 ms 9848 KB Output is correct
10 Correct 10 ms 9848 KB Output is correct
11 Correct 15 ms 9720 KB Output is correct
12 Correct 12 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 12 ms 9720 KB Output is correct
15 Correct 10 ms 9848 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9724 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9692 KB Output is correct
20 Correct 10 ms 9692 KB Output is correct
21 Correct 10 ms 9720 KB Output is correct
22 Correct 10 ms 9724 KB Output is correct
23 Correct 10 ms 9720 KB Output is correct
24 Correct 10 ms 9720 KB Output is correct
25 Correct 10 ms 9848 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 10 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 10 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9720 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 10 ms 9848 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 10 ms 9820 KB Output is correct
37 Correct 10 ms 9720 KB Output is correct
38 Correct 10 ms 9848 KB Output is correct
39 Correct 10 ms 9848 KB Output is correct
40 Correct 10 ms 9720 KB Output is correct
41 Correct 10 ms 9848 KB Output is correct
42 Correct 10 ms 9848 KB Output is correct
43 Correct 11 ms 9848 KB Output is correct
44 Correct 11 ms 9760 KB Output is correct
45 Correct 10 ms 9848 KB Output is correct
46 Correct 10 ms 9848 KB Output is correct
47 Correct 11 ms 9788 KB Output is correct
48 Correct 10 ms 9848 KB Output is correct
49 Correct 10 ms 9848 KB Output is correct
50 Correct 10 ms 9720 KB Output is correct
51 Correct 10 ms 9848 KB Output is correct
52 Correct 11 ms 9848 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 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 10 ms 9720 KB Output is correct
5 Correct 10 ms 9720 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 10 ms 9720 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 10 ms 9848 KB Output is correct
10 Correct 10 ms 9848 KB Output is correct
11 Correct 15 ms 9720 KB Output is correct
12 Correct 12 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 12 ms 9720 KB Output is correct
15 Correct 10 ms 9848 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9724 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9692 KB Output is correct
20 Correct 10 ms 9692 KB Output is correct
21 Correct 10 ms 9720 KB Output is correct
22 Correct 10 ms 9724 KB Output is correct
23 Correct 10 ms 9720 KB Output is correct
24 Correct 10 ms 9720 KB Output is correct
25 Correct 10 ms 9848 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 10 ms 9720 KB Output is correct
28 Correct 10 ms 9720 KB Output is correct
29 Correct 10 ms 9720 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9720 KB Output is correct
32 Correct 10 ms 9720 KB Output is correct
33 Correct 10 ms 9720 KB Output is correct
34 Correct 10 ms 9848 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 10 ms 9820 KB Output is correct
37 Correct 10 ms 9848 KB Output is correct
38 Correct 10 ms 9768 KB Output is correct
39 Correct 10 ms 9720 KB Output is correct
40 Correct 10 ms 9720 KB Output is correct
41 Correct 10 ms 9720 KB Output is correct
42 Correct 10 ms 9720 KB Output is correct
43 Correct 10 ms 9720 KB Output is correct
44 Correct 10 ms 9720 KB Output is correct
45 Correct 10 ms 9720 KB Output is correct
46 Correct 10 ms 9720 KB Output is correct
47 Correct 10 ms 9720 KB Output is correct
48 Correct 10 ms 9848 KB Output is correct
49 Correct 10 ms 9848 KB Output is correct
50 Correct 10 ms 9720 KB Output is correct
51 Correct 11 ms 9980 KB Output is correct
52 Correct 10 ms 9848 KB Output is correct
53 Correct 11 ms 9720 KB Output is correct
54 Correct 14 ms 10232 KB Output is correct
55 Correct 14 ms 10232 KB Output is correct
56 Correct 52 ms 14616 KB Output is correct
57 Correct 47 ms 15980 KB Output is correct
58 Correct 52 ms 15980 KB Output is correct
59 Correct 46 ms 15600 KB Output is correct
60 Correct 52 ms 15980 KB Output is correct
61 Correct 45 ms 15724 KB Output is correct
62 Correct 47 ms 15856 KB Output is correct
63 Correct 47 ms 15852 KB Output is correct
64 Correct 47 ms 15856 KB Output is correct
65 Correct 52 ms 15872 KB Output is correct
66 Correct 47 ms 15856 KB Output is correct
67 Correct 45 ms 15600 KB Output is correct
68 Correct 47 ms 15852 KB Output is correct
69 Correct 11 ms 9848 KB Output is correct
70 Correct 10 ms 9848 KB Output is correct
71 Correct 47 ms 15828 KB Output is correct
72 Correct 46 ms 15856 KB Output is correct
73 Correct 47 ms 15856 KB Output is correct
74 Correct 10 ms 9720 KB Output is correct
75 Correct 10 ms 9724 KB Output is correct
76 Correct 10 ms 9720 KB Output is correct
77 Correct 10 ms 9720 KB Output is correct
78 Correct 77 ms 19960 KB Output is correct
79 Correct 67 ms 16376 KB Output is correct
80 Correct 80 ms 21112 KB Output is correct
81 Correct 51 ms 15876 KB Output is correct
82 Correct 82 ms 21204 KB Output is correct
83 Correct 82 ms 18116 KB Output is correct
84 Correct 10 ms 9720 KB Output is correct
85 Correct 10 ms 9848 KB Output is correct
86 Correct 10 ms 9848 KB Output is correct
87 Correct 10 ms 9720 KB Output is correct
88 Correct 10 ms 9848 KB Output is correct
89 Correct 10 ms 9848 KB Output is correct
90 Correct 11 ms 9848 KB Output is correct
91 Correct 11 ms 9760 KB Output is correct
92 Correct 10 ms 9848 KB Output is correct
93 Correct 10 ms 9848 KB Output is correct
94 Correct 11 ms 9788 KB Output is correct
95 Correct 10 ms 9848 KB Output is correct
96 Correct 10 ms 9848 KB Output is correct
97 Correct 10 ms 9720 KB Output is correct
98 Correct 10 ms 9848 KB Output is correct
99 Correct 11 ms 9848 KB Output is correct
100 Correct 11 ms 9848 KB Output is correct
101 Correct 21 ms 10744 KB Output is correct
102 Correct 16 ms 10360 KB Output is correct
103 Correct 98 ms 21112 KB Output is correct
104 Correct 92 ms 21104 KB Output is correct
105 Correct 98 ms 18524 KB Output is correct
106 Correct 81 ms 21112 KB Output is correct
107 Correct 74 ms 16632 KB Output is correct
108 Correct 74 ms 16884 KB Output is correct
109 Correct 47 ms 16112 KB Output is correct
110 Correct 46 ms 15800 KB Output is correct
111 Correct 83 ms 20472 KB Output is correct
112 Correct 91 ms 19772 KB Output is correct
113 Correct 72 ms 16504 KB Output is correct
114 Correct 80 ms 21112 KB Output is correct
115 Correct 81 ms 21112 KB Output is correct