oj.uz

Submission #971146

# Submission time Handle Problem Language Result Execution time Memory
971146 2024-04-28T04:30:22 Z yellowtoad Arranging Shoes (IOI19_shoes) C++17
45 / 100
 117 ms 143476 KB 
#include "shoes.h"
#include <iostream>
#include <queue>
#define f first
#define s second
#define int long long
using namespace std;

int p[200010], cnt, nxt, tmp[200010];
queue<pair<int,int>> l;
queue<int> r[200010];

void merge(int l, int r) {
	if (l >= r) return;
	int mid = (l+r)/2;
	merge(l,mid);
	merge(mid+1,r);
	int x = l, y = mid+1;
	for (int i = l; i <= r; i++) {
		if ((y > r) || ((x <= mid) && (p[x] < p[y]))) tmp[i] = p[x++];
		else {
			cnt += mid-x+1;
			tmp[i] = p[y++];
		}
	}
	for (int i = l; i <= r; i++) p[i] = tmp[i];
}

long long count_swaps(std::vector<signed> a) {
	for (int i = 0; i < a.size(); i++) {
		if (a[i] < 0) l.push({i,-a[i]});
		else r[a[i]].push(i);
	}
	for (int i = 0; i < a.size(); i++) {
		if (i%2 == 0) {
			p[l.front().f] = i;
			nxt = l.front().s;
			l.pop();
		} else {
			p[r[nxt].front()] = i;
			r[nxt].pop();
		}
	}
	merge(0,a.size()-1);
	return cnt;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:30:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for (int i = 0; i < a.size(); i++) {
      |                  ~~^~~~~~~~~~
shoes.cpp:34:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  for (int i = 0; i < a.size(); i++) {
      |                  ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 137808 KB Output is correct
2 Correct 67 ms 137812 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 137808 KB Output is correct
2 Correct 67 ms 137812 KB Output is correct
3 Correct 65 ms 137812 KB Output is correct
4 Correct 64 ms 137812 KB Output is correct
5 Correct 64 ms 137812 KB Output is correct
6 Correct 67 ms 137812 KB Output is correct
7 Correct 66 ms 138220 KB Output is correct
8 Correct 63 ms 137968 KB Output is correct
9 Correct 63 ms 137812 KB Output is correct
10 Correct 67 ms 137964 KB Output is correct
11 Correct 64 ms 137812 KB Output is correct
12 Correct 64 ms 137808 KB Output is correct
13 Correct 63 ms 137808 KB Output is correct
14 Incorrect 65 ms 137812 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 69 ms 137808 KB Output is correct
2 Correct 67 ms 137812 KB Output is correct
3 Correct 66 ms 137812 KB Output is correct
4 Correct 64 ms 137808 KB Output is correct
5 Correct 65 ms 137808 KB Output is correct
6 Correct 64 ms 137808 KB Output is correct
7 Correct 63 ms 137852 KB Output is correct
8 Correct 64 ms 137920 KB Output is correct
9 Correct 64 ms 137988 KB Output is correct
10 Correct 63 ms 137808 KB Output is correct
11 Correct 63 ms 137808 KB Output is correct
12 Correct 64 ms 138076 KB Output is correct
13 Correct 64 ms 138028 KB Output is correct
14 Correct 66 ms 137808 KB Output is correct
15 Correct 64 ms 137964 KB Output is correct
16 Correct 69 ms 137936 KB Output is correct
17 Correct 72 ms 138076 KB Output is correct
18 Correct 71 ms 138060 KB Output is correct
19 Correct 70 ms 138068 KB Output is correct
20 Correct 74 ms 138320 KB Output is correct
21 Correct 77 ms 138704 KB Output is correct
22 Correct 95 ms 142056 KB Output is correct
23 Correct 94 ms 143440 KB Output is correct
24 Correct 95 ms 143444 KB Output is correct
25 Correct 94 ms 143168 KB Output is correct
26 Correct 95 ms 143476 KB Output is correct
27 Correct 94 ms 143440 KB Output is correct
28 Correct 93 ms 143444 KB Output is correct
29 Correct 94 ms 143452 KB Output is correct
30 Correct 99 ms 143432 KB Output is correct
31 Correct 96 ms 143444 KB Output is correct
32 Correct 93 ms 143440 KB Output is correct
33 Correct 92 ms 143188 KB Output is correct
34 Correct 110 ms 143444 KB Output is correct
35 Correct 64 ms 137812 KB Output is correct
36 Correct 65 ms 137812 KB Output is correct
37 Correct 90 ms 143444 KB Output is correct
38 Correct 92 ms 143444 KB Output is correct
39 Correct 94 ms 143444 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 137808 KB Output is correct
2 Correct 70 ms 137812 KB Output is correct
3 Correct 66 ms 137812 KB Output is correct
4 Correct 66 ms 138064 KB Output is correct
5 Correct 117 ms 141400 KB Output is correct
6 Correct 95 ms 142668 KB Output is correct
7 Correct 106 ms 142416 KB Output is correct
8 Correct 93 ms 143428 KB Output is correct
9 Correct 108 ms 142412 KB Output is correct
10 Correct 101 ms 142416 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 137808 KB Output is correct
2 Correct 67 ms 137812 KB Output is correct
3 Correct 65 ms 137812 KB Output is correct
4 Correct 64 ms 137812 KB Output is correct
5 Correct 64 ms 137812 KB Output is correct
6 Correct 67 ms 137812 KB Output is correct
7 Correct 66 ms 138220 KB Output is correct
8 Correct 63 ms 137968 KB Output is correct
9 Correct 63 ms 137812 KB Output is correct
10 Correct 67 ms 137964 KB Output is correct
11 Correct 64 ms 137812 KB Output is correct
12 Correct 64 ms 137808 KB Output is correct
13 Correct 63 ms 137808 KB Output is correct
14 Incorrect 65 ms 137812 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 137808 KB Output is correct
2 Correct 67 ms 137812 KB Output is correct
3 Correct 65 ms 137812 KB Output is correct
4 Correct 64 ms 137812 KB Output is correct
5 Correct 64 ms 137812 KB Output is correct
6 Correct 67 ms 137812 KB Output is correct
7 Correct 66 ms 138220 KB Output is correct
8 Correct 63 ms 137968 KB Output is correct
9 Correct 63 ms 137812 KB Output is correct
10 Correct 67 ms 137964 KB Output is correct
11 Correct 64 ms 137812 KB Output is correct
12 Correct 64 ms 137808 KB Output is correct
13 Correct 63 ms 137808 KB Output is correct
14 Incorrect 65 ms 137812 KB Output isn't correct
15 Halted 0 ms 0 KB -