oj.uz

Submission #661209

# Submission time Handle Problem Language Result Execution time Memory
661209 2022-11-24T23:17:47 Z amsraman Arranging Shoes (IOI19_shoes) C++14
100 / 100
 142 ms 139340 KB 
#include <bits/stdc++.h>
typedef long long ll;

using namespace std;

template <typename T>
struct FenwickTree {
    int n;
    vector<T> bit;
    FenwickTree(int n): n(n), bit(n, 0) {};
    FenwickTree(vector<T> & init): n((int) init.size()), bit((int) init.size()) {
        copy(init.begin(), init.end(), bit.begin());
        for(int i = 1; i <= n; i++) {
            if(i + (i & -i) <= n) {
                bit[i + (i & -i) - 1] += bit[i - 1];
            }
        }
    }
    T qry(int k) {
        T ret = 0;
        for(k++; k > 0; k -= k & -k) {
            ret += bit[k - 1];
        }
        return ret;
    }
    T qry(int l, int r) {
        return qry(r) - qry(l - 1);
    }
    void upd(int k, T x) {
        for(k++; k <= n; k += k & -k) {
            bit[k - 1] += x;
        }
    }
};

ll count_swaps(vector<int> S) {
    int n = S.size();
    ll ans = 0;
    FenwickTree<int> ft(n);
    vector<queue<int>> lefts(n / 2), rights(n / 2);
    vector<bool> done(n, false);
    for(int i = 0; i < n; i++) {
        ft.upd(i, 1);
        if(S[i] < 0) {
            lefts[-S[i] - 1].push(i);
        } else {
            rights[S[i] - 1].push(i);
        }
    }
    for(int i = 0, j = 0; i < n / 2; i++) {
        while(done[j]) {
            ++j;
        }
        int left_thing, right_thing;
        if(S[j] < 0) {
            left_thing = j, right_thing = rights[-S[j] - 1].front();
        } else {
            left_thing = lefts[S[j] - 1].front(), right_thing = j;
        }
        lefts[abs(S[j]) - 1].pop(), rights[abs(S[j]) - 1].pop(), done[left_thing] = done[right_thing] = true;
        ft.upd(left_thing, -1); ans += ft.qry(left_thing);
        ft.upd(right_thing, -1); ans += ft.qry(right_thing);
    }
    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 224 KB Output is correct
10 Correct 0 ms 304 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 296 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 296 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 296 KB Output is correct
36 Correct 1 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 0 ms 296 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 432 KB Output is correct
17 Correct 1 ms 688 KB Output is correct
18 Correct 2 ms 1592 KB Output is correct
19 Correct 1 ms 1584 KB Output is correct
20 Correct 10 ms 14136 KB Output is correct
21 Correct 11 ms 14096 KB Output is correct
22 Correct 106 ms 138364 KB Output is correct
23 Correct 100 ms 138336 KB Output is correct
24 Correct 104 ms 138324 KB Output is correct
25 Correct 102 ms 138332 KB Output is correct
26 Correct 103 ms 138316 KB Output is correct
27 Correct 102 ms 138308 KB Output is correct
28 Correct 99 ms 138368 KB Output is correct
29 Correct 99 ms 138276 KB Output is correct
30 Correct 100 ms 138396 KB Output is correct
31 Correct 105 ms 138476 KB Output is correct
32 Correct 110 ms 138400 KB Output is correct
33 Correct 99 ms 138316 KB Output is correct
34 Correct 100 ms 138316 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 256 KB Output is correct
37 Correct 100 ms 138384 KB Output is correct
38 Correct 101 ms 138336 KB Output is correct
39 Correct 99 ms 138292 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 131 ms 137448 KB Output is correct
6 Correct 108 ms 137556 KB Output is correct
7 Correct 131 ms 137500 KB Output is correct
8 Correct 109 ms 138364 KB Output is correct
9 Correct 131 ms 137512 KB Output is correct
10 Correct 124 ms 137564 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 224 KB Output is correct
10 Correct 0 ms 304 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 296 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 296 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 296 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 1 ms 1620 KB Output is correct
42 Correct 1 ms 1620 KB Output is correct
43 Correct 1 ms 1620 KB Output is correct
44 Correct 2 ms 1620 KB Output is correct
45 Correct 1 ms 1620 KB Output is correct
46 Correct 3 ms 1588 KB Output is correct
47 Correct 1 ms 1620 KB Output is correct
48 Correct 1 ms 1620 KB Output is correct
49 Correct 1 ms 1620 KB Output is correct
50 Correct 2 ms 1620 KB Output is correct
51 Correct 1 ms 1620 KB Output is correct
52 Correct 1 ms 1620 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 224 KB Output is correct
10 Correct 0 ms 304 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 300 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 296 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 296 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 296 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 300 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 0 ms 296 KB Output is correct
44 Correct 1 ms 300 KB Output is correct
45 Correct 1 ms 304 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 432 KB Output is correct
51 Correct 1 ms 688 KB Output is correct
52 Correct 2 ms 1592 KB Output is correct
53 Correct 1 ms 1584 KB Output is correct
54 Correct 10 ms 14136 KB Output is correct
55 Correct 11 ms 14096 KB Output is correct
56 Correct 106 ms 138364 KB Output is correct
57 Correct 100 ms 138336 KB Output is correct
58 Correct 104 ms 138324 KB Output is correct
59 Correct 102 ms 138332 KB Output is correct
60 Correct 103 ms 138316 KB Output is correct
61 Correct 102 ms 138308 KB Output is correct
62 Correct 99 ms 138368 KB Output is correct
63 Correct 99 ms 138276 KB Output is correct
64 Correct 100 ms 138396 KB Output is correct
65 Correct 105 ms 138476 KB Output is correct
66 Correct 110 ms 138400 KB Output is correct
67 Correct 99 ms 138316 KB Output is correct
68 Correct 100 ms 138316 KB Output is correct
69 Correct 1 ms 212 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 100 ms 138384 KB Output is correct
72 Correct 101 ms 138336 KB Output is correct
73 Correct 99 ms 138292 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 1 ms 212 KB Output is correct
78 Correct 131 ms 137448 KB Output is correct
79 Correct 108 ms 137556 KB Output is correct
80 Correct 131 ms 137500 KB Output is correct
81 Correct 109 ms 138364 KB Output is correct
82 Correct 131 ms 137512 KB Output is correct
83 Correct 124 ms 137564 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 0 ms 340 KB Output is correct
86 Correct 1 ms 340 KB Output is correct
87 Correct 1 ms 596 KB Output is correct
88 Correct 1 ms 1620 KB Output is correct
89 Correct 1 ms 1620 KB Output is correct
90 Correct 1 ms 1620 KB Output is correct
91 Correct 2 ms 1620 KB Output is correct
92 Correct 1 ms 1620 KB Output is correct
93 Correct 3 ms 1588 KB Output is correct
94 Correct 1 ms 1620 KB Output is correct
95 Correct 1 ms 1620 KB Output is correct
96 Correct 1 ms 1620 KB Output is correct
97 Correct 2 ms 1620 KB Output is correct
98 Correct 1 ms 1620 KB Output is correct
99 Correct 1 ms 1620 KB Output is correct
100 Correct 1 ms 1588 KB Output is correct
101 Correct 12 ms 14104 KB Output is correct
102 Correct 13 ms 14096 KB Output is correct
103 Correct 141 ms 138540 KB Output is correct
104 Correct 142 ms 138544 KB Output is correct
105 Correct 137 ms 138560 KB Output is correct
106 Correct 142 ms 138552 KB Output is correct
107 Correct 122 ms 138468 KB Output is correct
108 Correct 124 ms 138528 KB Output is correct
109 Correct 100 ms 139340 KB Output is correct
110 Correct 99 ms 139308 KB Output is correct
111 Correct 131 ms 138548 KB Output is correct
112 Correct 142 ms 138592 KB Output is correct
113 Correct 109 ms 138480 KB Output is correct
114 Correct 130 ms 138536 KB Output is correct
115 Correct 134 ms 138544 KB Output is correct