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Submission #835480

# Submission time Handle Problem Language Result Execution time Memory
835480 2023-08-23T14:59:58 Z VMaksimoski008 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 473 ms 36384 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

struct SegTree {
    int n;
    vector<int> tree;

    SegTree(int n) : n(n), tree(4*n+5, 0) {}

    void update(int u, int tl, int tr, int pos, int val) {
        if(tl == tr) {
            tree[u] += val;
        } else {
            int tm = (tl + tr) / 2;
            if(pos <= tm)
                update(2*u, tl, tm, pos, val);
            else
                update(2*u+1, tm+1, tr, pos, val);
            tree[u] = tree[2*u] + tree[2*u+1];
        }
    }

    int query(int u, int tl, int tr, int l, int r) {
        if(tl > tr || l > tr || tl > r) return 0;
        if(l <= tl && tr <= r) return tree[u];
        int tm = (tl + tr) / 2;
        return query(2*u, tl, tm, l, r)
        + query(2*u+1, tm+1, tr, l, r);
    }

    void update(int pos, int val) {
        update(1, 0, n-1, pos, val);
    }

    int query(int l, int r) {
        return query(1, 0, n-1, l, r);
    }
};

int64_t count_swaps(vector<int> S) {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    int n = S.size() / 2;
    ll ans = 0;

    map<int, vector<int> > occ;
    map<int, int> ptr;
    vector<bool> vis(2*n, false);
    SegTree tree(2*n);

    for(int i=0; i<2*n; i++) {
        occ[S[i]].push_back(i);
        if(!ptr.count(S[i])) ptr[S[i]] = 0;
    }

    for(int i=0; i<2*n; i++) {
        if(vis[i]) continue;
        vis[i] = true;
        int to_pair_pos = occ[-S[i]][ptr[-S[i]]];
        vis[to_pair_pos] = true;

        if(S[i] < 0) ans += (to_pair_pos - i - 1);
        else ans += (to_pair_pos - i);
        
        ans -= tree.query(i, to_pair_pos);
        tree.update(to_pair_pos, 1);

        ptr[-S[i]]++;
        ptr[S[i]]++;
    }

    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 1 ms 212 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 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 256 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 212 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 256 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 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 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 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 4 ms 928 KB Output is correct
21 Correct 4 ms 980 KB Output is correct
22 Correct 41 ms 5884 KB Output is correct
23 Correct 34 ms 5968 KB Output is correct
24 Correct 42 ms 5968 KB Output is correct
25 Correct 41 ms 6096 KB Output is correct
26 Correct 42 ms 5968 KB Output is correct
27 Correct 34 ms 6044 KB Output is correct
28 Correct 46 ms 6224 KB Output is correct
29 Correct 42 ms 6096 KB Output is correct
30 Correct 47 ms 6224 KB Output is correct
31 Correct 42 ms 5856 KB Output is correct
32 Correct 45 ms 6224 KB Output is correct
33 Correct 40 ms 6224 KB Output is correct
34 Correct 41 ms 6224 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 41 ms 6348 KB Output is correct
38 Correct 41 ms 6224 KB Output is correct
39 Correct 41 ms 6224 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 382 ms 36348 KB Output is correct
6 Correct 141 ms 8704 KB Output is correct
7 Correct 368 ms 36232 KB Output is correct
8 Correct 46 ms 6004 KB Output is correct
9 Correct 467 ms 36228 KB Output is correct
10 Correct 242 ms 20740 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 256 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 212 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 256 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 2 ms 596 KB Output is correct
42 Correct 3 ms 596 KB Output is correct
43 Correct 2 ms 596 KB Output is correct
44 Correct 2 ms 596 KB Output is correct
45 Correct 2 ms 468 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 2 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 2 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 2 ms 596 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 256 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 212 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 256 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 336 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 4 ms 928 KB Output is correct
55 Correct 4 ms 980 KB Output is correct
56 Correct 41 ms 5884 KB Output is correct
57 Correct 34 ms 5968 KB Output is correct
58 Correct 42 ms 5968 KB Output is correct
59 Correct 41 ms 6096 KB Output is correct
60 Correct 42 ms 5968 KB Output is correct
61 Correct 34 ms 6044 KB Output is correct
62 Correct 46 ms 6224 KB Output is correct
63 Correct 42 ms 6096 KB Output is correct
64 Correct 47 ms 6224 KB Output is correct
65 Correct 42 ms 5856 KB Output is correct
66 Correct 45 ms 6224 KB Output is correct
67 Correct 40 ms 6224 KB Output is correct
68 Correct 41 ms 6224 KB Output is correct
69 Correct 0 ms 212 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 41 ms 6348 KB Output is correct
72 Correct 41 ms 6224 KB Output is correct
73 Correct 41 ms 6224 KB Output is correct
74 Correct 1 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 0 ms 212 KB Output is correct
78 Correct 382 ms 36348 KB Output is correct
79 Correct 141 ms 8704 KB Output is correct
80 Correct 368 ms 36232 KB Output is correct
81 Correct 46 ms 6004 KB Output is correct
82 Correct 467 ms 36228 KB Output is correct
83 Correct 242 ms 20740 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 1 ms 212 KB Output is correct
86 Correct 1 ms 340 KB Output is correct
87 Correct 1 ms 340 KB Output is correct
88 Correct 2 ms 596 KB Output is correct
89 Correct 3 ms 596 KB Output is correct
90 Correct 2 ms 596 KB Output is correct
91 Correct 2 ms 596 KB Output is correct
92 Correct 2 ms 468 KB Output is correct
93 Correct 2 ms 468 KB Output is correct
94 Correct 2 ms 468 KB Output is correct
95 Correct 1 ms 468 KB Output is correct
96 Correct 2 ms 340 KB Output is correct
97 Correct 1 ms 340 KB Output is correct
98 Correct 1 ms 340 KB Output is correct
99 Correct 2 ms 596 KB Output is correct
100 Correct 2 ms 596 KB Output is correct
101 Correct 19 ms 3540 KB Output is correct
102 Correct 16 ms 1492 KB Output is correct
103 Correct 473 ms 36384 KB Output is correct
104 Correct 366 ms 36300 KB Output is correct
105 Correct 297 ms 22732 KB Output is correct
106 Correct 394 ms 36284 KB Output is correct
107 Correct 139 ms 9472 KB Output is correct
108 Correct 150 ms 12720 KB Output is correct
109 Correct 44 ms 6160 KB Output is correct
110 Correct 41 ms 6096 KB Output is correct
111 Correct 357 ms 32968 KB Output is correct
112 Correct 395 ms 29428 KB Output is correct
113 Correct 154 ms 9724 KB Output is correct
114 Correct 385 ms 36260 KB Output is correct
115 Correct 393 ms 36356 KB Output is correct