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Submission #986571

# Submission time Handle Problem Language Result Execution time Memory
986571 2024-05-20T19:11:30 Z mariaclara Arranging Shoes (IOI19_shoes) C++17
100 / 100
 79 ms 73236 KB 
#include "shoes.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
const int MAXN = 2e5+5;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mk make_pair
#define pb push_back
#define fr first
#define sc second

int n, bit[MAXN];

void update(int x, int val) {
	for( ; x < 2*n; x += x&-x)
		bit[x] += val;
}

int query(int x) {
	int cnt = 0;
	while(x > 0) {
		cnt += bit[x];
		x -= x&-x;
	}
	return cnt;
}
ll count_swaps(vector<int> s) {
	
	n = sz(s)/2;
	vector<int> pos(2*n,0);
	vector<pii> v;
	vector<queue<int>> fila(n+1);

	ll ans = 0;
	for(int i = 2*n-1; i >= 0; i--) {
		int x = abs(s[i]);
		if(fila[x].empty()) { 
			fila[x].push(i);
		}
		else if(s[fila[x].front()] != s[i]) {
			v.pb({i, fila[x].front()});
			if(s[i] > 0) ans++;
			pos[fila[x].front()] = pos[i] = sz(v)-1;
			fila[x].pop();
		}
		else fila[x].push(i);
	}

	for(int i = 0; i < 2*n; i++) {
		auto [l,r] = v[pos[i]];
		if(l == i) {
			update(r, 1);
			ans += (query(2*n-1) - query(r));
		}
		else {
			update(r, -1);
			ans += (query(2*n-1) - query(r));
		}
	}

	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 360 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 0 ms 360 KB Output is correct
4 Correct 0 ms 360 KB Output is correct
5 Correct 1 ms 356 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 360 KB Output is correct
18 Correct 0 ms 360 KB Output is correct
19 Correct 0 ms 360 KB Output is correct
20 Correct 0 ms 360 KB Output is correct
21 Correct 0 ms 360 KB Output is correct
22 Correct 1 ms 356 KB Output is correct
23 Correct 1 ms 360 KB Output is correct
24 Correct 0 ms 356 KB Output is correct
25 Correct 0 ms 600 KB Output is correct
26 Correct 0 ms 356 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 352 KB Output is correct
36 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 1 ms 352 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 352 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 352 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 352 KB Output is correct
14 Correct 1 ms 444 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 448 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 2 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 6 ms 8024 KB Output is correct
21 Correct 6 ms 7772 KB Output is correct
22 Correct 61 ms 73020 KB Output is correct
23 Correct 58 ms 72908 KB Output is correct
24 Correct 74 ms 73032 KB Output is correct
25 Correct 58 ms 72860 KB Output is correct
26 Correct 62 ms 73236 KB Output is correct
27 Correct 56 ms 72648 KB Output is correct
28 Correct 56 ms 72912 KB Output is correct
29 Correct 55 ms 73100 KB Output is correct
30 Correct 58 ms 73160 KB Output is correct
31 Correct 62 ms 72852 KB Output is correct
32 Correct 55 ms 73092 KB Output is correct
33 Correct 54 ms 72664 KB Output is correct
34 Correct 57 ms 72908 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 68 ms 73096 KB Output is correct
38 Correct 54 ms 73016 KB Output is correct
39 Correct 58 ms 72932 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 68 ms 72516 KB Output is correct
6 Correct 60 ms 72648 KB Output is correct
7 Correct 65 ms 72592 KB Output is correct
8 Correct 63 ms 72892 KB Output is correct
9 Correct 66 ms 72588 KB Output is correct
10 Correct 64 ms 72464 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 0 ms 360 KB Output is correct
4 Correct 0 ms 360 KB Output is correct
5 Correct 1 ms 356 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 360 KB Output is correct
18 Correct 0 ms 360 KB Output is correct
19 Correct 0 ms 360 KB Output is correct
20 Correct 0 ms 360 KB Output is correct
21 Correct 0 ms 360 KB Output is correct
22 Correct 1 ms 356 KB Output is correct
23 Correct 1 ms 360 KB Output is correct
24 Correct 0 ms 356 KB Output is correct
25 Correct 0 ms 600 KB Output is correct
26 Correct 0 ms 356 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 352 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 1 ms 604 KB Output is correct
41 Correct 1 ms 1116 KB Output is correct
42 Correct 1 ms 1116 KB Output is correct
43 Correct 2 ms 1116 KB Output is correct
44 Correct 1 ms 1116 KB Output is correct
45 Correct 1 ms 1116 KB Output is correct
46 Correct 1 ms 1116 KB Output is correct
47 Correct 1 ms 1116 KB Output is correct
48 Correct 1 ms 1116 KB Output is correct
49 Correct 1 ms 1116 KB Output is correct
50 Correct 1 ms 1116 KB Output is correct
51 Correct 1 ms 1116 KB Output is correct
52 Correct 1 ms 1116 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 360 KB Output is correct
3 Correct 0 ms 360 KB Output is correct
4 Correct 0 ms 360 KB Output is correct
5 Correct 1 ms 356 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 360 KB Output is correct
18 Correct 0 ms 360 KB Output is correct
19 Correct 0 ms 360 KB Output is correct
20 Correct 0 ms 360 KB Output is correct
21 Correct 0 ms 360 KB Output is correct
22 Correct 1 ms 356 KB Output is correct
23 Correct 1 ms 360 KB Output is correct
24 Correct 0 ms 356 KB Output is correct
25 Correct 0 ms 600 KB Output is correct
26 Correct 0 ms 356 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 352 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 352 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 352 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 352 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 1 ms 352 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 352 KB Output is correct
48 Correct 1 ms 444 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 448 KB Output is correct
51 Correct 1 ms 604 KB Output is correct
52 Correct 2 ms 1116 KB Output is correct
53 Correct 1 ms 1116 KB Output is correct
54 Correct 6 ms 8024 KB Output is correct
55 Correct 6 ms 7772 KB Output is correct
56 Correct 61 ms 73020 KB Output is correct
57 Correct 58 ms 72908 KB Output is correct
58 Correct 74 ms 73032 KB Output is correct
59 Correct 58 ms 72860 KB Output is correct
60 Correct 62 ms 73236 KB Output is correct
61 Correct 56 ms 72648 KB Output is correct
62 Correct 56 ms 72912 KB Output is correct
63 Correct 55 ms 73100 KB Output is correct
64 Correct 58 ms 73160 KB Output is correct
65 Correct 62 ms 72852 KB Output is correct
66 Correct 55 ms 73092 KB Output is correct
67 Correct 54 ms 72664 KB Output is correct
68 Correct 57 ms 72908 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 68 ms 73096 KB Output is correct
72 Correct 54 ms 73016 KB Output is correct
73 Correct 58 ms 72932 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 1 ms 348 KB Output is correct
76 Correct 1 ms 344 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 68 ms 72516 KB Output is correct
79 Correct 60 ms 72648 KB Output is correct
80 Correct 65 ms 72592 KB Output is correct
81 Correct 63 ms 72892 KB Output is correct
82 Correct 66 ms 72588 KB Output is correct
83 Correct 64 ms 72464 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 1 ms 344 KB Output is correct
86 Correct 1 ms 344 KB Output is correct
87 Correct 1 ms 604 KB Output is correct
88 Correct 1 ms 1116 KB Output is correct
89 Correct 1 ms 1116 KB Output is correct
90 Correct 2 ms 1116 KB Output is correct
91 Correct 1 ms 1116 KB Output is correct
92 Correct 1 ms 1116 KB Output is correct
93 Correct 1 ms 1116 KB Output is correct
94 Correct 1 ms 1116 KB Output is correct
95 Correct 1 ms 1116 KB Output is correct
96 Correct 1 ms 1116 KB Output is correct
97 Correct 1 ms 1116 KB Output is correct
98 Correct 1 ms 1116 KB Output is correct
99 Correct 1 ms 1116 KB Output is correct
100 Correct 1 ms 1116 KB Output is correct
101 Correct 6 ms 7772 KB Output is correct
102 Correct 6 ms 7772 KB Output is correct
103 Correct 71 ms 73160 KB Output is correct
104 Correct 65 ms 73052 KB Output is correct
105 Correct 74 ms 73004 KB Output is correct
106 Correct 66 ms 72648 KB Output is correct
107 Correct 62 ms 73016 KB Output is correct
108 Correct 67 ms 73072 KB Output is correct
109 Correct 53 ms 72876 KB Output is correct
110 Correct 54 ms 72872 KB Output is correct
111 Correct 79 ms 72636 KB Output is correct
112 Correct 69 ms 73000 KB Output is correct
113 Correct 61 ms 72648 KB Output is correct
114 Correct 65 ms 72652 KB Output is correct
115 Correct 62 ms 72552 KB Output is correct