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Submission #418753

# Submission time Handle Problem Language Result Execution time Memory
418753 2021-06-05T19:54:18 Z nafis_shifat Arranging Shoes (IOI19_shoes) C++14
100 / 100
 94 ms 20292 KB 
#include "shoes.h"
#include<bits/stdc++.h>
#define ll long long
const int mxn = 2e5+ 5;
using namespace std;


struct BIT {
	int bit[mxn] = {};
	void update(int p,int v) {
		for(; p < mxn; p += p & -p) bit[p] += v;
	}
    int query(int p) {
    	int res = 0;
    	for(; p > 0; p -= p & -p) res += bit[p];
    	return res;
    }
    int query(int a,int b) {
    	if(a > b) return 0;
    	return query(b) - query(a - 1);
    }
} bt;
ll count_swaps(vector<int> s) {
	int n = s.size();
	vector<int> left[n],right[n];

	for(int i = n - 1; i >= 0; i--) {
		if(s[i] < 0) left[-s[i]].push_back(i);
		else right[s[i]].push_back(i);
	}


	int vis[n + 1] = {};
	ll res = 0;
	for(int i = 0; i < n; i++) {


		if(vis[i]) {
			continue;
		}

		if(s[i] < 0) {
			int x = -s[i];
			assert(i == left[x].back());
			left[x].pop_back();

			int y = right[x].back();

			res += y - i - 1 - bt.query(i + 1,y - 1);
			vis[y] = 1;
			
		
			right[x].pop_back();
			bt.update(y,1);

		} else {
			int x = s[i];
			assert(i == right[x].back());
			right[x].pop_back();


			int y = left[x].back();
			res += y - i - bt.query(i + 1,y - 1);
			vis[y] = 1;
		

			left[x].pop_back();
			bt.update(y,1);
		}

		
	}

	return res;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 300 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 296 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 280 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 0 ms 300 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 4 ms 1852 KB Output is correct
21 Correct 5 ms 1740 KB Output is correct
22 Correct 42 ms 14892 KB Output is correct
23 Correct 40 ms 15012 KB Output is correct
24 Correct 42 ms 14944 KB Output is correct
25 Correct 39 ms 14376 KB Output is correct
26 Correct 41 ms 15004 KB Output is correct
27 Correct 36 ms 14888 KB Output is correct
28 Correct 39 ms 14500 KB Output is correct
29 Correct 37 ms 14516 KB Output is correct
30 Correct 39 ms 14524 KB Output is correct
31 Correct 40 ms 14912 KB Output is correct
32 Correct 37 ms 14500 KB Output is correct
33 Correct 38 ms 14328 KB Output is correct
34 Correct 37 ms 14500 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 38 ms 14504 KB Output is correct
38 Correct 38 ms 14508 KB Output is correct
39 Correct 37 ms 14512 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 72 ms 19892 KB Output is correct
6 Correct 51 ms 15024 KB Output is correct
7 Correct 72 ms 19880 KB Output is correct
8 Correct 37 ms 14568 KB Output is correct
9 Correct 74 ms 19924 KB Output is correct
10 Correct 74 ms 16820 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 300 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 296 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 280 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 0 ms 300 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 460 KB Output is correct
42 Correct 1 ms 460 KB Output is correct
43 Correct 1 ms 460 KB Output is correct
44 Correct 1 ms 460 KB Output is correct
45 Correct 1 ms 460 KB Output is correct
46 Correct 1 ms 440 KB Output is correct
47 Correct 1 ms 460 KB Output is correct
48 Correct 1 ms 460 KB Output is correct
49 Correct 1 ms 460 KB Output is correct
50 Correct 1 ms 460 KB Output is correct
51 Correct 1 ms 460 KB Output is correct
52 Correct 1 ms 460 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 300 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 296 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 280 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 0 ms 300 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 304 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 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 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 460 KB Output is correct
53 Correct 1 ms 460 KB Output is correct
54 Correct 4 ms 1852 KB Output is correct
55 Correct 5 ms 1740 KB Output is correct
56 Correct 42 ms 14892 KB Output is correct
57 Correct 40 ms 15012 KB Output is correct
58 Correct 42 ms 14944 KB Output is correct
59 Correct 39 ms 14376 KB Output is correct
60 Correct 41 ms 15004 KB Output is correct
61 Correct 36 ms 14888 KB Output is correct
62 Correct 39 ms 14500 KB Output is correct
63 Correct 37 ms 14516 KB Output is correct
64 Correct 39 ms 14524 KB Output is correct
65 Correct 40 ms 14912 KB Output is correct
66 Correct 37 ms 14500 KB Output is correct
67 Correct 38 ms 14328 KB Output is correct
68 Correct 37 ms 14500 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 38 ms 14504 KB Output is correct
72 Correct 38 ms 14508 KB Output is correct
73 Correct 37 ms 14512 KB Output is correct
74 Correct 0 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 1 ms 332 KB Output is correct
77 Correct 1 ms 332 KB Output is correct
78 Correct 72 ms 19892 KB Output is correct
79 Correct 51 ms 15024 KB Output is correct
80 Correct 72 ms 19880 KB Output is correct
81 Correct 37 ms 14568 KB Output is correct
82 Correct 74 ms 19924 KB Output is correct
83 Correct 74 ms 16820 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 1 ms 332 KB Output is correct
86 Correct 1 ms 332 KB Output is correct
87 Correct 1 ms 332 KB Output is correct
88 Correct 1 ms 460 KB Output is correct
89 Correct 1 ms 460 KB Output is correct
90 Correct 1 ms 460 KB Output is correct
91 Correct 1 ms 460 KB Output is correct
92 Correct 1 ms 460 KB Output is correct
93 Correct 1 ms 440 KB Output is correct
94 Correct 1 ms 460 KB Output is correct
95 Correct 1 ms 460 KB Output is correct
96 Correct 1 ms 460 KB Output is correct
97 Correct 1 ms 460 KB Output is correct
98 Correct 1 ms 460 KB Output is correct
99 Correct 1 ms 460 KB Output is correct
100 Correct 1 ms 460 KB Output is correct
101 Correct 6 ms 2232 KB Output is correct
102 Correct 6 ms 1868 KB Output is correct
103 Correct 94 ms 20292 KB Output is correct
104 Correct 71 ms 20272 KB Output is correct
105 Correct 77 ms 17548 KB Output is correct
106 Correct 68 ms 19908 KB Output is correct
107 Correct 55 ms 15540 KB Output is correct
108 Correct 55 ms 15924 KB Output is correct
109 Correct 37 ms 14908 KB Output is correct
110 Correct 37 ms 14508 KB Output is correct
111 Correct 69 ms 19228 KB Output is correct
112 Correct 83 ms 18864 KB Output is correct
113 Correct 53 ms 15228 KB Output is correct
114 Correct 66 ms 19892 KB Output is correct
115 Correct 67 ms 19916 KB Output is correct