oj.uz

Submission #609645

# Submission time Handle Problem Language Result Execution time Memory
609645 2022-07-27T18:45:56 Z fvogel499 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 382 ms 40496 KB 
// #include "grader.cpp"
#include "shoes.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define vi vector<int>

#define size(x) (int)((x).size())

#define int long long

using namespace std;
using namespace __gnu_pbds;

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const int p2 = 1<<18;

struct Segtree {
	Segtree() {
		t = new int [p2*2];
		for (int i = 0; i < p2*2; i++) t[i] = 0;
	}
	void upd(int x, int v) {
		for (x += p2; x; x /= 2) {
			t[x] += v;
		}
	}
	int get(int b, int e) {
		int r = 0;
		b += p2;
		e += p2;
		while (b <= e) {
			if (b%2 == 1) {
				r += t[b];
				b++;
			}
			if (e%2 == 0) {
				r += t[e];
				e--;
			}
			b /= 2;
			e /= 2;
		}
		return r;
	}
	int* t;
};

int count_swaps(vector<signed> bcc) {
	vi b;
	for (int i : bcc) b.push_back(i);
	int n = size(b);
	map<int, map<int, vi>> per;
	for (int i = n-1; i >= 0; i--) {
		int sign = 0;
		if (b[i] < 0) {
			sign = 1;
		}
		per[abs(b[i])][sign].push_back(i);
	}
	bool handled [n];
	for (int i = 0; i < n; i++) handled[i] = false;
	Segtree st = Segtree();
	int cost = 0;
	int before = 0;
	for (int i = 0; i < n; i++) if (!handled[i]) {
		int sign = 0;
		if (b[i] < 0) {
			sign = 1;
		}
		assert(size(per[abs(b[i])][sign]) == size(per[abs(b[i])][!sign]));
		assert(!per[abs(b[i])][sign].empty() && per[abs(b[i])][sign].back() == i);
		per[abs(b[i])][sign].pop_back();
		int j = per[abs(b[i])][!sign].back();
		per[abs(b[i])][!sign].pop_back();
		if (b[i] > 0) {
			cost++;
		}
		if (i+1 <= j-1) {
			int loc = st.get(i+1, j-1);
			cost += (j-1)-(i+1)+1 - loc;
		}
		st.upd(i, 1); // not needed
		st.upd(j, 1);
		handled[i] = true;
		handled[j] = true;
	}
	return cost;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:67:6: warning: unused variable 'before' [-Wunused-variable]
   67 |  int before = 0;
      |      ^~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 3 ms 4308 KB Output is correct
8 Correct 3 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 2 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 2 ms 4308 KB Output is correct
13 Correct 2 ms 4308 KB Output is correct
14 Correct 3 ms 4308 KB Output is correct
15 Correct 2 ms 4308 KB Output is correct
16 Correct 2 ms 4308 KB Output is correct
17 Correct 2 ms 4308 KB Output is correct
18 Correct 2 ms 4308 KB Output is correct
19 Correct 2 ms 4308 KB Output is correct
20 Correct 2 ms 4308 KB Output is correct
21 Correct 2 ms 4308 KB Output is correct
22 Correct 2 ms 4308 KB Output is correct
23 Correct 2 ms 4308 KB Output is correct
24 Correct 2 ms 4308 KB Output is correct
25 Correct 2 ms 4308 KB Output is correct
26 Correct 2 ms 4308 KB Output is correct
27 Correct 2 ms 4308 KB Output is correct
28 Correct 2 ms 4308 KB Output is correct
29 Correct 2 ms 4308 KB Output is correct
30 Correct 2 ms 4308 KB Output is correct
31 Correct 2 ms 4308 KB Output is correct
32 Correct 2 ms 4308 KB Output is correct
33 Correct 3 ms 4308 KB Output is correct
34 Correct 2 ms 4308 KB Output is correct
35 Correct 2 ms 4308 KB Output is correct
36 Correct 2 ms 4308 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 2 ms 4308 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 2 ms 4308 KB Output is correct
8 Correct 3 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 2 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 2 ms 4308 KB Output is correct
13 Correct 2 ms 4308 KB Output is correct
14 Correct 2 ms 4308 KB Output is correct
15 Correct 2 ms 4308 KB Output is correct
16 Correct 2 ms 4436 KB Output is correct
17 Correct 2 ms 4436 KB Output is correct
18 Correct 3 ms 4436 KB Output is correct
19 Correct 2 ms 4436 KB Output is correct
20 Correct 6 ms 5072 KB Output is correct
21 Correct 8 ms 4944 KB Output is correct
22 Correct 40 ms 10804 KB Output is correct
23 Correct 34 ms 11836 KB Output is correct
24 Correct 39 ms 12604 KB Output is correct
25 Correct 34 ms 11332 KB Output is correct
26 Correct 42 ms 11424 KB Output is correct
27 Correct 32 ms 11676 KB Output is correct
28 Correct 37 ms 11604 KB Output is correct
29 Correct 42 ms 11572 KB Output is correct
30 Correct 35 ms 11548 KB Output is correct
31 Correct 40 ms 11416 KB Output is correct
32 Correct 36 ms 11580 KB Output is correct
33 Correct 36 ms 11324 KB Output is correct
34 Correct 38 ms 11556 KB Output is correct
35 Correct 2 ms 4308 KB Output is correct
36 Correct 2 ms 4308 KB Output is correct
37 Correct 36 ms 11560 KB Output is correct
38 Correct 40 ms 11548 KB Output is correct
39 Correct 38 ms 11556 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 2 ms 4308 KB Output is correct
5 Correct 327 ms 39040 KB Output is correct
6 Correct 149 ms 13740 KB Output is correct
7 Correct 342 ms 40340 KB Output is correct
8 Correct 50 ms 11412 KB Output is correct
9 Correct 328 ms 40208 KB Output is correct
10 Correct 266 ms 25232 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 3 ms 4308 KB Output is correct
8 Correct 3 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 2 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 2 ms 4308 KB Output is correct
13 Correct 2 ms 4308 KB Output is correct
14 Correct 3 ms 4308 KB Output is correct
15 Correct 2 ms 4308 KB Output is correct
16 Correct 2 ms 4308 KB Output is correct
17 Correct 2 ms 4308 KB Output is correct
18 Correct 2 ms 4308 KB Output is correct
19 Correct 2 ms 4308 KB Output is correct
20 Correct 2 ms 4308 KB Output is correct
21 Correct 2 ms 4308 KB Output is correct
22 Correct 2 ms 4308 KB Output is correct
23 Correct 2 ms 4308 KB Output is correct
24 Correct 2 ms 4308 KB Output is correct
25 Correct 2 ms 4308 KB Output is correct
26 Correct 2 ms 4308 KB Output is correct
27 Correct 2 ms 4308 KB Output is correct
28 Correct 2 ms 4308 KB Output is correct
29 Correct 2 ms 4308 KB Output is correct
30 Correct 2 ms 4308 KB Output is correct
31 Correct 2 ms 4308 KB Output is correct
32 Correct 2 ms 4308 KB Output is correct
33 Correct 3 ms 4308 KB Output is correct
34 Correct 2 ms 4308 KB Output is correct
35 Correct 2 ms 4308 KB Output is correct
36 Correct 2 ms 4308 KB Output is correct
37 Correct 2 ms 4308 KB Output is correct
38 Correct 2 ms 4308 KB Output is correct
39 Correct 2 ms 4436 KB Output is correct
40 Correct 2 ms 4436 KB Output is correct
41 Correct 3 ms 4692 KB Output is correct
42 Correct 3 ms 4692 KB Output is correct
43 Correct 4 ms 4692 KB Output is correct
44 Correct 3 ms 4564 KB Output is correct
45 Correct 4 ms 4564 KB Output is correct
46 Correct 3 ms 4564 KB Output is correct
47 Correct 3 ms 4564 KB Output is correct
48 Correct 3 ms 4436 KB Output is correct
49 Correct 3 ms 4436 KB Output is correct
50 Correct 2 ms 4436 KB Output is correct
51 Correct 2 ms 4436 KB Output is correct
52 Correct 3 ms 4692 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 3 ms 4436 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 3 ms 4308 KB Output is correct
8 Correct 3 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 2 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 2 ms 4308 KB Output is correct
13 Correct 2 ms 4308 KB Output is correct
14 Correct 3 ms 4308 KB Output is correct
15 Correct 2 ms 4308 KB Output is correct
16 Correct 2 ms 4308 KB Output is correct
17 Correct 2 ms 4308 KB Output is correct
18 Correct 2 ms 4308 KB Output is correct
19 Correct 2 ms 4308 KB Output is correct
20 Correct 2 ms 4308 KB Output is correct
21 Correct 2 ms 4308 KB Output is correct
22 Correct 2 ms 4308 KB Output is correct
23 Correct 2 ms 4308 KB Output is correct
24 Correct 2 ms 4308 KB Output is correct
25 Correct 2 ms 4308 KB Output is correct
26 Correct 2 ms 4308 KB Output is correct
27 Correct 2 ms 4308 KB Output is correct
28 Correct 2 ms 4308 KB Output is correct
29 Correct 2 ms 4308 KB Output is correct
30 Correct 2 ms 4308 KB Output is correct
31 Correct 2 ms 4308 KB Output is correct
32 Correct 2 ms 4308 KB Output is correct
33 Correct 3 ms 4308 KB Output is correct
34 Correct 2 ms 4308 KB Output is correct
35 Correct 2 ms 4308 KB Output is correct
36 Correct 2 ms 4308 KB Output is correct
37 Correct 2 ms 4308 KB Output is correct
38 Correct 2 ms 4308 KB Output is correct
39 Correct 2 ms 4308 KB Output is correct
40 Correct 2 ms 4308 KB Output is correct
41 Correct 2 ms 4308 KB Output is correct
42 Correct 3 ms 4308 KB Output is correct
43 Correct 2 ms 4308 KB Output is correct
44 Correct 2 ms 4308 KB Output is correct
45 Correct 2 ms 4308 KB Output is correct
46 Correct 2 ms 4308 KB Output is correct
47 Correct 2 ms 4308 KB Output is correct
48 Correct 2 ms 4308 KB Output is correct
49 Correct 2 ms 4308 KB Output is correct
50 Correct 2 ms 4436 KB Output is correct
51 Correct 2 ms 4436 KB Output is correct
52 Correct 3 ms 4436 KB Output is correct
53 Correct 2 ms 4436 KB Output is correct
54 Correct 6 ms 5072 KB Output is correct
55 Correct 8 ms 4944 KB Output is correct
56 Correct 40 ms 10804 KB Output is correct
57 Correct 34 ms 11836 KB Output is correct
58 Correct 39 ms 12604 KB Output is correct
59 Correct 34 ms 11332 KB Output is correct
60 Correct 42 ms 11424 KB Output is correct
61 Correct 32 ms 11676 KB Output is correct
62 Correct 37 ms 11604 KB Output is correct
63 Correct 42 ms 11572 KB Output is correct
64 Correct 35 ms 11548 KB Output is correct
65 Correct 40 ms 11416 KB Output is correct
66 Correct 36 ms 11580 KB Output is correct
67 Correct 36 ms 11324 KB Output is correct
68 Correct 38 ms 11556 KB Output is correct
69 Correct 2 ms 4308 KB Output is correct
70 Correct 2 ms 4308 KB Output is correct
71 Correct 36 ms 11560 KB Output is correct
72 Correct 40 ms 11548 KB Output is correct
73 Correct 38 ms 11556 KB Output is correct
74 Correct 2 ms 4308 KB Output is correct
75 Correct 2 ms 4308 KB Output is correct
76 Correct 2 ms 4308 KB Output is correct
77 Correct 2 ms 4308 KB Output is correct
78 Correct 327 ms 39040 KB Output is correct
79 Correct 149 ms 13740 KB Output is correct
80 Correct 342 ms 40340 KB Output is correct
81 Correct 50 ms 11412 KB Output is correct
82 Correct 328 ms 40208 KB Output is correct
83 Correct 266 ms 25232 KB Output is correct
84 Correct 2 ms 4308 KB Output is correct
85 Correct 2 ms 4308 KB Output is correct
86 Correct 2 ms 4436 KB Output is correct
87 Correct 2 ms 4436 KB Output is correct
88 Correct 3 ms 4692 KB Output is correct
89 Correct 3 ms 4692 KB Output is correct
90 Correct 4 ms 4692 KB Output is correct
91 Correct 3 ms 4564 KB Output is correct
92 Correct 4 ms 4564 KB Output is correct
93 Correct 3 ms 4564 KB Output is correct
94 Correct 3 ms 4564 KB Output is correct
95 Correct 3 ms 4436 KB Output is correct
96 Correct 3 ms 4436 KB Output is correct
97 Correct 2 ms 4436 KB Output is correct
98 Correct 2 ms 4436 KB Output is correct
99 Correct 3 ms 4692 KB Output is correct
100 Correct 4 ms 4692 KB Output is correct
101 Correct 20 ms 7632 KB Output is correct
102 Correct 16 ms 5600 KB Output is correct
103 Correct 382 ms 40496 KB Output is correct
104 Correct 278 ms 40292 KB Output is correct
105 Correct 312 ms 27196 KB Output is correct
106 Correct 328 ms 40284 KB Output is correct
107 Correct 132 ms 14488 KB Output is correct
108 Correct 182 ms 17548 KB Output is correct
109 Correct 39 ms 11836 KB Output is correct
110 Correct 34 ms 11580 KB Output is correct
111 Correct 342 ms 36828 KB Output is correct
112 Correct 335 ms 33484 KB Output is correct
113 Correct 154 ms 14712 KB Output is correct
114 Correct 340 ms 40252 KB Output is correct
115 Correct 364 ms 40292 KB Output is correct