oj.uz

Submission #742330

# Submission time Handle Problem Language Result Execution time Memory
742330 2023-05-16T06:16:38 Z haydendoo Arranging Shoes (IOI19_shoes) C++17
100 / 100
 194 ms 141324 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> pi;

const int N=2e5+10;

int fw[N], fw2[N];
void update(int x, int y, int v) { //inclusive
    ++x; ++y;
    for (int tx=x; tx < N; tx += tx&(-tx)) fw[tx] += v, fw2[tx] -= v*(x-1);
    for (int ty=y+1; ty < N; ty += ty&(-ty)) fw[ty] -= v, fw2[ty] += v*y; 
}
int sum (int x) {
    ++x;
    int res = 0;
    for (int tx=x; tx; tx -= tx&(-tx)) res += fw[tx]*x + fw2[tx];
    return res;
}
int range_sum(int x, int y) { //inclusive
    return sum(y)-sum(x-1);
}

long long count_swaps(vector<int> s) {
    int n=s.size();
	deque<int> dq[n/2+1], dq2[n/2+1];
    for(int i=0; i<n; ++i) {
        if(s[i]<0) dq[-s[i]].push_back(i+1);
        else dq2[s[i]].push_back(i+1);
    }
    for(int i=0; i<=n; ++i) {
        update(i+1,i+1,i+1);
    }
    long long ans=0;
    vector<pair<int,int>> pairs;
    for(int i=1; i<=n/2; ++i) {
        for(int j=0; j<dq[i].size(); ++j) {
            if(dq[i][j]>dq2[i][j]) {
                ++ans;
                swap(dq[i][j], dq2[i][j]);
            }
            pairs.emplace_back(dq[i][j], dq2[i][j]);
        }
    }
    sort(pairs.begin(), pairs.end());
    long long cnt=0;
    for(auto it: pairs) {
        int l=it.first, r=it.second;
        ans += range_sum(r,r) + range_sum(l,l) - (cnt*2+1) - (cnt*2+2); //<< '\n';
        ++cnt;
        update(0,l,1); update(0,r,1);
    }
    return ans;
}

// int main() {
//     cout << count_swaps({2,1,-1,-2});
// }

/*
dq[1] = [2]
dq[2] = [1]
dq2[1] = [3]
dq2[2] = [4]
*/

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |         for(int j=0; j<dq[i].size(); ++j) {
      |                      ~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 308 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 312 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 308 KB Output is correct
25 Correct 1 ms 312 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 304 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 304 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 692 KB Output is correct
18 Correct 2 ms 1748 KB Output is correct
19 Correct 2 ms 1748 KB Output is correct
20 Correct 16 ms 14396 KB Output is correct
21 Correct 14 ms 14420 KB Output is correct
22 Correct 158 ms 141272 KB Output is correct
23 Correct 139 ms 141260 KB Output is correct
24 Correct 142 ms 141232 KB Output is correct
25 Correct 137 ms 141044 KB Output is correct
26 Correct 133 ms 141292 KB Output is correct
27 Correct 137 ms 141064 KB Output is correct
28 Correct 129 ms 141228 KB Output is correct
29 Correct 130 ms 141320 KB Output is correct
30 Correct 129 ms 141232 KB Output is correct
31 Correct 139 ms 141224 KB Output is correct
32 Correct 129 ms 141236 KB Output is correct
33 Correct 131 ms 141108 KB Output is correct
34 Correct 137 ms 141240 KB Output is correct
35 Correct 1 ms 304 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 127 ms 141232 KB Output is correct
38 Correct 142 ms 141272 KB Output is correct
39 Correct 137 ms 141324 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 152 ms 140416 KB Output is correct
6 Correct 146 ms 140420 KB Output is correct
7 Correct 179 ms 140472 KB Output is correct
8 Correct 145 ms 141316 KB Output is correct
9 Correct 160 ms 140436 KB Output is correct
10 Correct 171 ms 140588 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 312 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 308 KB Output is correct
25 Correct 1 ms 312 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 304 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 304 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 724 KB Output is correct
41 Correct 2 ms 1748 KB Output is correct
42 Correct 2 ms 1748 KB Output is correct
43 Correct 2 ms 1720 KB Output is correct
44 Correct 2 ms 1748 KB Output is correct
45 Correct 2 ms 1748 KB Output is correct
46 Correct 2 ms 1748 KB Output is correct
47 Correct 2 ms 1748 KB Output is correct
48 Correct 2 ms 1748 KB Output is correct
49 Correct 3 ms 1748 KB Output is correct
50 Correct 2 ms 1720 KB Output is correct
51 Correct 3 ms 1748 KB Output is correct
52 Correct 4 ms 1748 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 312 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 312 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 308 KB Output is correct
25 Correct 1 ms 312 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 304 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 308 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 304 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 304 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 308 KB Output is correct
47 Correct 1 ms 304 KB Output is correct
48 Correct 1 ms 304 KB Output is correct
49 Correct 0 ms 340 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 1 ms 692 KB Output is correct
52 Correct 2 ms 1748 KB Output is correct
53 Correct 2 ms 1748 KB Output is correct
54 Correct 16 ms 14396 KB Output is correct
55 Correct 14 ms 14420 KB Output is correct
56 Correct 158 ms 141272 KB Output is correct
57 Correct 139 ms 141260 KB Output is correct
58 Correct 142 ms 141232 KB Output is correct
59 Correct 137 ms 141044 KB Output is correct
60 Correct 133 ms 141292 KB Output is correct
61 Correct 137 ms 141064 KB Output is correct
62 Correct 129 ms 141228 KB Output is correct
63 Correct 130 ms 141320 KB Output is correct
64 Correct 129 ms 141232 KB Output is correct
65 Correct 139 ms 141224 KB Output is correct
66 Correct 129 ms 141236 KB Output is correct
67 Correct 131 ms 141108 KB Output is correct
68 Correct 137 ms 141240 KB Output is correct
69 Correct 1 ms 304 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 127 ms 141232 KB Output is correct
72 Correct 142 ms 141272 KB Output is correct
73 Correct 137 ms 141324 KB Output is correct
74 Correct 1 ms 340 KB Output is correct
75 Correct 1 ms 340 KB Output is correct
76 Correct 1 ms 312 KB Output is correct
77 Correct 1 ms 304 KB Output is correct
78 Correct 152 ms 140416 KB Output is correct
79 Correct 146 ms 140420 KB Output is correct
80 Correct 179 ms 140472 KB Output is correct
81 Correct 145 ms 141316 KB Output is correct
82 Correct 160 ms 140436 KB Output is correct
83 Correct 171 ms 140588 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 1 ms 340 KB Output is correct
86 Correct 1 ms 468 KB Output is correct
87 Correct 1 ms 724 KB Output is correct
88 Correct 2 ms 1748 KB Output is correct
89 Correct 2 ms 1748 KB Output is correct
90 Correct 2 ms 1720 KB Output is correct
91 Correct 2 ms 1748 KB Output is correct
92 Correct 2 ms 1748 KB Output is correct
93 Correct 2 ms 1748 KB Output is correct
94 Correct 2 ms 1748 KB Output is correct
95 Correct 2 ms 1748 KB Output is correct
96 Correct 3 ms 1748 KB Output is correct
97 Correct 2 ms 1720 KB Output is correct
98 Correct 3 ms 1748 KB Output is correct
99 Correct 4 ms 1748 KB Output is correct
100 Correct 2 ms 1748 KB Output is correct
101 Correct 16 ms 14404 KB Output is correct
102 Correct 16 ms 14420 KB Output is correct
103 Correct 194 ms 140432 KB Output is correct
104 Correct 164 ms 140436 KB Output is correct
105 Correct 182 ms 140412 KB Output is correct
106 Correct 164 ms 140424 KB Output is correct
107 Correct 155 ms 140396 KB Output is correct
108 Correct 151 ms 140476 KB Output is correct
109 Correct 142 ms 141256 KB Output is correct
110 Correct 133 ms 141228 KB Output is correct
111 Correct 161 ms 140456 KB Output is correct
112 Correct 173 ms 140432 KB Output is correct
113 Correct 155 ms 140372 KB Output is correct
114 Correct 156 ms 140368 KB Output is correct
115 Correct 159 ms 140376 KB Output is correct