oj.uz

Submission #420458

# Submission time Handle Problem Language Result Execution time Memory
420458 2021-06-08T11:23:10 Z QCFium Arranging Shoes (IOI19_shoes) C++14
100 / 100
 436 ms 27172 KB 
#include <bits/stdc++.h>

int ri() {
	int n;
	scanf("%d", &n);
	return n;
}

struct SegTree {
	int n;
	std::vector<int> data;
	SegTree (int n_) {
		for (n = 1; n < n_; n <<= 1);
		data.resize(n << 1);
		for (int i = 0; i < n_; i++) data[i + n] = 1;
		for (int i = n; --i; ) data[i] = data[i << 1] + data[i << 1 | 1];
	}
	void add(int i, int val) {
		for (i += n; i; i >>= 1) data[i] += val;
	}
	int sum(int l, int r) {
		int res = 0;
		for (l += n, r += n; l < r; l >>= 1, r >>= 1) {
			if (r & 1) res += data[--r];
			if (l & 1) res += data[l++];
		}
		return res;
	}
};

long long count_swaps(std::vector<int> a) {
	int n = a.size();
	
	std::map<int, std::vector<int> > index;
	for (int i = 0; i < n; i++) index[a[i]].push_back(i);
	for (auto &i : index) std::reverse(i.second.begin(), i.second.end());
	
	SegTree tree(n);
	std::vector<bool> alive(n, true);
	int64_t res = 0;
	for (int i = 0; i < n; i++) {
		if (!alive[i]) continue;
		int t = index[-a[i]].back();
		index[-a[i]].pop_back();
		index[a[i]].pop_back();
		alive[i] = false;
		alive[t] = false;
		tree.add(i, -1);
		tree.add(t, -1);
		res += tree.sum(i, t);
		if (a[i] > 0) res++;
	}
	return res;
}

Compilation message

shoes.cpp: In function 'int ri()':
shoes.cpp:5:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 4 ms 844 KB Output is correct
21 Correct 4 ms 844 KB Output is correct
22 Correct 41 ms 4708 KB Output is correct
23 Correct 33 ms 4904 KB Output is correct
24 Correct 39 ms 4784 KB Output is correct
25 Correct 38 ms 4804 KB Output is correct
26 Correct 43 ms 6164 KB Output is correct
27 Correct 33 ms 5904 KB Output is correct
28 Correct 39 ms 6084 KB Output is correct
29 Correct 38 ms 6048 KB Output is correct
30 Correct 38 ms 6056 KB Output is correct
31 Correct 42 ms 6068 KB Output is correct
32 Correct 39 ms 6076 KB Output is correct
33 Correct 37 ms 5792 KB Output is correct
34 Correct 39 ms 6056 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 38 ms 6096 KB Output is correct
38 Correct 37 ms 6076 KB Output is correct
39 Correct 38 ms 6096 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 402 ms 25780 KB Output is correct
6 Correct 120 ms 8004 KB Output is correct
7 Correct 339 ms 27148 KB Output is correct
8 Correct 39 ms 6084 KB Output is correct
9 Correct 365 ms 27092 KB Output is correct
10 Correct 221 ms 16196 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 1 ms 460 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 2 ms 460 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 0 ms 204 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 4 ms 844 KB Output is correct
55 Correct 4 ms 844 KB Output is correct
56 Correct 41 ms 4708 KB Output is correct
57 Correct 33 ms 4904 KB Output is correct
58 Correct 39 ms 4784 KB Output is correct
59 Correct 38 ms 4804 KB Output is correct
60 Correct 43 ms 6164 KB Output is correct
61 Correct 33 ms 5904 KB Output is correct
62 Correct 39 ms 6084 KB Output is correct
63 Correct 38 ms 6048 KB Output is correct
64 Correct 38 ms 6056 KB Output is correct
65 Correct 42 ms 6068 KB Output is correct
66 Correct 39 ms 6076 KB Output is correct
67 Correct 37 ms 5792 KB Output is correct
68 Correct 39 ms 6056 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 38 ms 6096 KB Output is correct
72 Correct 37 ms 6076 KB Output is correct
73 Correct 38 ms 6096 KB Output is correct
74 Correct 0 ms 204 KB Output is correct
75 Correct 0 ms 204 KB Output is correct
76 Correct 1 ms 204 KB Output is correct
77 Correct 0 ms 208 KB Output is correct
78 Correct 402 ms 25780 KB Output is correct
79 Correct 120 ms 8004 KB Output is correct
80 Correct 339 ms 27148 KB Output is correct
81 Correct 39 ms 6084 KB Output is correct
82 Correct 365 ms 27092 KB Output is correct
83 Correct 221 ms 16196 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 0 ms 204 KB Output is correct
86 Correct 1 ms 204 KB Output is correct
87 Correct 1 ms 332 KB Output is correct
88 Correct 2 ms 460 KB Output is correct
89 Correct 2 ms 460 KB Output is correct
90 Correct 2 ms 460 KB Output is correct
91 Correct 2 ms 460 KB Output is correct
92 Correct 1 ms 460 KB Output is correct
93 Correct 1 ms 332 KB Output is correct
94 Correct 1 ms 332 KB Output is correct
95 Correct 1 ms 332 KB Output is correct
96 Correct 1 ms 332 KB Output is correct
97 Correct 1 ms 204 KB Output is correct
98 Correct 1 ms 204 KB Output is correct
99 Correct 2 ms 460 KB Output is correct
100 Correct 2 ms 460 KB Output is correct
101 Correct 18 ms 2748 KB Output is correct
102 Correct 12 ms 1228 KB Output is correct
103 Correct 436 ms 27092 KB Output is correct
104 Correct 316 ms 27144 KB Output is correct
105 Correct 289 ms 17572 KB Output is correct
106 Correct 343 ms 27096 KB Output is correct
107 Correct 128 ms 8516 KB Output is correct
108 Correct 158 ms 10516 KB Output is correct
109 Correct 43 ms 6304 KB Output is correct
110 Correct 38 ms 6040 KB Output is correct
111 Correct 307 ms 24868 KB Output is correct
112 Correct 370 ms 22132 KB Output is correct
113 Correct 144 ms 8696 KB Output is correct
114 Correct 348 ms 27172 KB Output is correct
115 Correct 328 ms 26972 KB Output is correct