Submission #398500

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
398500	2021-05-04T12:03:18 Z	kevinxiehk	Arranging Shoes (IOI19_shoes)	C++17	45 / 100	148 ms	140604 KB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll fen[200005];
int n;
void update(int id, int val) {
    id++;
    while(id <= n + 1) {
        fen[id] += val;
        id += (id & (-id));
    }
    return;
}
ll pre(int id) {
    if(id <= -1) return 0;
    int ans = 0;
    id++;
    while(id) {
        ans += fen[id];
        id -= (id & (-id));
    }
    return ans; 
}
int range(int l, int r){
    return pre(r) - pre(l - 1);
}
long long count_swaps(vector<int> arr) {
	n = arr.size();
	queue<int> pl[n + 5];
	int dk[n + 5];
	int t = 0;
	for(int i = 0; i < n; i++) {
		if(arr[i] < 0) {
			dk[i] = t;
			t++;
			pl[-arr[i]].push(t);
			t++;
		}
	}
	for(int i = 0; i < n; i++) {
		if(arr[i] > 0) {
			dk[i] = pl[arr[i]].front();
			pl[arr[i]].pop();
		} 
	}
	ll ans = 0;
	for(int i = 0; i < n; i++) {
		ans += i - pre(dk[i]);
		update(dk[i], 1);
	}
	return ans;
}

Subtask #1

10.0 / 10.0

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

Subtask #2

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	304 KB	Output is correct
5	Correct	1 ms	288 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	208 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 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	Incorrect	1 ms	204 KB	Output isn't correct
15	Halted	0 ms	0 KB	-

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	304 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	208 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	208 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	304 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	716 KB	Output is correct
18	Correct	2 ms	1612 KB	Output is correct
19	Correct	2 ms	1612 KB	Output is correct
20	Correct	12 ms	14288 KB	Output is correct
21	Correct	14 ms	14284 KB	Output is correct
22	Correct	128 ms	139468 KB	Output is correct
23	Correct	131 ms	140460 KB	Output is correct
24	Correct	131 ms	140532 KB	Output is correct
25	Correct	148 ms	140296 KB	Output is correct
26	Correct	129 ms	140532 KB	Output is correct
27	Correct	129 ms	140236 KB	Output is correct
28	Correct	130 ms	140548 KB	Output is correct
29	Correct	128 ms	140604 KB	Output is correct
30	Correct	130 ms	140424 KB	Output is correct
31	Correct	130 ms	140460 KB	Output is correct
32	Correct	137 ms	140524 KB	Output is correct
33	Correct	126 ms	140204 KB	Output is correct
34	Correct	124 ms	140448 KB	Output is correct
35	Correct	1 ms	204 KB	Output is correct
36	Correct	1 ms	204 KB	Output is correct
37	Correct	124 ms	140460 KB	Output is correct
38	Correct	126 ms	140412 KB	Output is correct
39	Correct	141 ms	140500 KB	Output is correct

Subtask #4

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	208 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	2 ms	284 KB	Output is correct
5	Correct	142 ms	138836 KB	Output is correct
6	Correct	136 ms	139972 KB	Output is correct
7	Correct	142 ms	140076 KB	Output is correct
8	Correct	127 ms	140480 KB	Output is correct
9	Correct	139 ms	140076 KB	Output is correct
10	Correct	143 ms	140080 KB	Output is correct

Subtask #5

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	304 KB	Output is correct
5	Correct	1 ms	288 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	208 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 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	Incorrect	1 ms	204 KB	Output isn't correct
15	Halted	0 ms	0 KB	-

Subtask #6

0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	304 KB	Output is correct
5	Correct	1 ms	288 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	208 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 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	Incorrect	1 ms	204 KB	Output isn't correct
15	Halted	0 ms	0 KB	-