oj.uz

Submission #264194

# Submission time Handle Problem Language Result Execution time Memory
264194 2020-08-14T05:32:39 Z hamerin Arranging Shoes (IOI19_shoes) C++17
100 / 100
 176 ms 8948 KB 
#include "shoes.h"

#include <bits/stdc++.h>

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

using namespace std;

using i64 = long long;
using d64 = long double;
using pi = pair<int, int>;
using pli = pair<i64, i64>;
using ti = tuple<int, int, int>;
using tli = tuple<i64, i64, i64>;

#define iterall(cont) cont.begin(), cont.end()
#define prec(n) setprecision(n) << fixed

const size_t fTsize = 1 << 18;
class fenwickTree {
   public:
    vector<int> vl;
    int N;

    fenwickTree() { vl.resize(fTsize); }

    int query(int t) {
        int ret = 0;
        while (t) ret += vl[t], t -= (t & -t);
        return ret;
    }

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

    void update(int t, int d = -1) {
        while (t < fTsize) vl[t] += d, t += (t & -t);
    }
};

i64 count_swaps(vector<int> s) {
    int N = s.size() >> 1;
    i64 ret = 0;

    set<pi> st;
    vector<pi> match;
    for (int i = 0; i < 2 * N; i++) {
        auto it = st.lower_bound({-s[i], 0});
        if (it != st.end() && it->first == -s[i]) {
            match.emplace_back(it->second, i);
            st.erase(it);
        } else {
            st.insert({s[i], i});
        }
    }
    sort(iterall(match));

    auto fT = fenwickTree();
    for (int i = 1; i <= 2 * N; i++) fT.update(i, 1);
    for (auto [l, r] : match) {
        ret += fT.query(++l, ++r);
        ret -= 2;

        if (s[l - 1] > s[r - 1]) ret += 1;

        fT.update(l);
        fT.update(r);
    }

    return ret;
}

Compilation message

shoes.cpp: In member function 'void fenwickTree::update(int, int)':
shoes.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare]
   37 |         while (t < fTsize) vl[t] += d, t += (t & -t);
      |                ~~^~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1408 KB Output is correct
2 Correct 1 ms 1408 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1408 KB Output is correct
2 Correct 1 ms 1408 KB Output is correct
3 Correct 1 ms 1408 KB Output is correct
4 Correct 2 ms 1280 KB Output is correct
5 Correct 1 ms 1392 KB Output is correct
6 Correct 2 ms 1408 KB Output is correct
7 Correct 1 ms 1408 KB Output is correct
8 Correct 1 ms 1344 KB Output is correct
9 Correct 1 ms 1408 KB Output is correct
10 Correct 1 ms 1408 KB Output is correct
11 Correct 1 ms 1408 KB Output is correct
12 Correct 1 ms 1408 KB Output is correct
13 Correct 1 ms 1408 KB Output is correct
14 Correct 1 ms 1408 KB Output is correct
15 Correct 1 ms 1396 KB Output is correct
16 Correct 1 ms 1408 KB Output is correct
17 Correct 1 ms 1408 KB Output is correct
18 Correct 1 ms 1408 KB Output is correct
19 Correct 1 ms 1384 KB Output is correct
20 Correct 1 ms 1280 KB Output is correct
21 Correct 1 ms 1408 KB Output is correct
22 Correct 1 ms 1408 KB Output is correct
23 Correct 1 ms 1280 KB Output is correct
24 Correct 1 ms 1280 KB Output is correct
25 Correct 1 ms 1408 KB Output is correct
26 Correct 1 ms 1408 KB Output is correct
27 Correct 1 ms 1408 KB Output is correct
28 Correct 1 ms 1408 KB Output is correct
29 Correct 1 ms 1408 KB Output is correct
30 Correct 1 ms 1408 KB Output is correct
31 Correct 1 ms 1408 KB Output is correct
32 Correct 1 ms 1408 KB Output is correct
33 Correct 2 ms 1408 KB Output is correct
34 Correct 1 ms 1408 KB Output is correct
35 Correct 3 ms 1408 KB Output is correct
36 Correct 1 ms 1280 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1408 KB Output is correct
2 Correct 1 ms 1408 KB Output is correct
3 Correct 1 ms 1408 KB Output is correct
4 Correct 1 ms 1400 KB Output is correct
5 Correct 1 ms 1408 KB Output is correct
6 Correct 1 ms 1408 KB Output is correct
7 Correct 1 ms 1408 KB Output is correct
8 Correct 1 ms 1408 KB Output is correct
9 Correct 1 ms 1408 KB Output is correct
10 Correct 1 ms 1408 KB Output is correct
11 Correct 1 ms 1408 KB Output is correct
12 Correct 1 ms 1408 KB Output is correct
13 Correct 1 ms 1408 KB Output is correct
14 Correct 1 ms 1408 KB Output is correct
15 Correct 1 ms 1408 KB Output is correct
16 Correct 1 ms 1408 KB Output is correct
17 Correct 2 ms 1408 KB Output is correct
18 Correct 2 ms 1408 KB Output is correct
19 Correct 2 ms 1408 KB Output is correct
20 Correct 6 ms 1792 KB Output is correct
21 Correct 8 ms 1792 KB Output is correct
22 Correct 60 ms 5024 KB Output is correct
23 Correct 53 ms 5100 KB Output is correct
24 Correct 58 ms 5100 KB Output is correct
25 Correct 78 ms 7672 KB Output is correct
26 Correct 58 ms 4972 KB Output is correct
27 Correct 51 ms 4844 KB Output is correct
28 Correct 78 ms 7780 KB Output is correct
29 Correct 99 ms 7672 KB Output is correct
30 Correct 84 ms 7664 KB Output is correct
31 Correct 59 ms 4972 KB Output is correct
32 Correct 79 ms 7672 KB Output is correct
33 Correct 73 ms 7636 KB Output is correct
34 Correct 76 ms 7676 KB Output is correct
35 Correct 1 ms 1408 KB Output is correct
36 Correct 1 ms 1408 KB Output is correct
37 Correct 79 ms 7672 KB Output is correct
38 Correct 83 ms 7672 KB Output is correct
39 Correct 79 ms 7672 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1408 KB Output is correct
2 Correct 1 ms 1280 KB Output is correct
3 Correct 1 ms 1408 KB Output is correct
4 Correct 1 ms 1408 KB Output is correct
5 Correct 117 ms 7904 KB Output is correct
6 Correct 133 ms 7800 KB Output is correct
7 Correct 114 ms 7800 KB Output is correct
8 Correct 74 ms 7800 KB Output is correct
9 Correct 114 ms 7800 KB Output is correct
10 Correct 113 ms 7780 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1408 KB Output is correct
2 Correct 1 ms 1408 KB Output is correct
3 Correct 1 ms 1408 KB Output is correct
4 Correct 2 ms 1280 KB Output is correct
5 Correct 1 ms 1392 KB Output is correct
6 Correct 2 ms 1408 KB Output is correct
7 Correct 1 ms 1408 KB Output is correct
8 Correct 1 ms 1344 KB Output is correct
9 Correct 1 ms 1408 KB Output is correct
10 Correct 1 ms 1408 KB Output is correct
11 Correct 1 ms 1408 KB Output is correct
12 Correct 1 ms 1408 KB Output is correct
13 Correct 1 ms 1408 KB Output is correct
14 Correct 1 ms 1408 KB Output is correct
15 Correct 1 ms 1396 KB Output is correct
16 Correct 1 ms 1408 KB Output is correct
17 Correct 1 ms 1408 KB Output is correct
18 Correct 1 ms 1408 KB Output is correct
19 Correct 1 ms 1384 KB Output is correct
20 Correct 1 ms 1280 KB Output is correct
21 Correct 1 ms 1408 KB Output is correct
22 Correct 1 ms 1408 KB Output is correct
23 Correct 1 ms 1280 KB Output is correct
24 Correct 1 ms 1280 KB Output is correct
25 Correct 1 ms 1408 KB Output is correct
26 Correct 1 ms 1408 KB Output is correct
27 Correct 1 ms 1408 KB Output is correct
28 Correct 1 ms 1408 KB Output is correct
29 Correct 1 ms 1408 KB Output is correct
30 Correct 1 ms 1408 KB Output is correct
31 Correct 1 ms 1408 KB Output is correct
32 Correct 1 ms 1408 KB Output is correct
33 Correct 2 ms 1408 KB Output is correct
34 Correct 1 ms 1408 KB Output is correct
35 Correct 3 ms 1408 KB Output is correct
36 Correct 1 ms 1280 KB Output is correct
37 Correct 1 ms 1408 KB Output is correct
38 Correct 1 ms 1408 KB Output is correct
39 Correct 1 ms 1408 KB Output is correct
40 Correct 2 ms 1280 KB Output is correct
41 Correct 2 ms 1408 KB Output is correct
42 Correct 2 ms 1408 KB Output is correct
43 Correct 2 ms 1408 KB Output is correct
44 Correct 2 ms 1408 KB Output is correct
45 Correct 2 ms 1408 KB Output is correct
46 Correct 2 ms 1408 KB Output is correct
47 Correct 2 ms 1408 KB Output is correct
48 Correct 2 ms 1408 KB Output is correct
49 Correct 3 ms 1408 KB Output is correct
50 Correct 2 ms 1408 KB Output is correct
51 Correct 2 ms 1408 KB Output is correct
52 Correct 2 ms 1408 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1408 KB Output is correct
2 Correct 1 ms 1408 KB Output is correct
3 Correct 1 ms 1408 KB Output is correct
4 Correct 2 ms 1280 KB Output is correct
5 Correct 1 ms 1392 KB Output is correct
6 Correct 2 ms 1408 KB Output is correct
7 Correct 1 ms 1408 KB Output is correct
8 Correct 1 ms 1344 KB Output is correct
9 Correct 1 ms 1408 KB Output is correct
10 Correct 1 ms 1408 KB Output is correct
11 Correct 1 ms 1408 KB Output is correct
12 Correct 1 ms 1408 KB Output is correct
13 Correct 1 ms 1408 KB Output is correct
14 Correct 1 ms 1408 KB Output is correct
15 Correct 1 ms 1396 KB Output is correct
16 Correct 1 ms 1408 KB Output is correct
17 Correct 1 ms 1408 KB Output is correct
18 Correct 1 ms 1408 KB Output is correct
19 Correct 1 ms 1384 KB Output is correct
20 Correct 1 ms 1280 KB Output is correct
21 Correct 1 ms 1408 KB Output is correct
22 Correct 1 ms 1408 KB Output is correct
23 Correct 1 ms 1280 KB Output is correct
24 Correct 1 ms 1280 KB Output is correct
25 Correct 1 ms 1408 KB Output is correct
26 Correct 1 ms 1408 KB Output is correct
27 Correct 1 ms 1408 KB Output is correct
28 Correct 1 ms 1408 KB Output is correct
29 Correct 1 ms 1408 KB Output is correct
30 Correct 1 ms 1408 KB Output is correct
31 Correct 1 ms 1408 KB Output is correct
32 Correct 1 ms 1408 KB Output is correct
33 Correct 2 ms 1408 KB Output is correct
34 Correct 1 ms 1408 KB Output is correct
35 Correct 3 ms 1408 KB Output is correct
36 Correct 1 ms 1280 KB Output is correct
37 Correct 1 ms 1408 KB Output is correct
38 Correct 1 ms 1400 KB Output is correct
39 Correct 1 ms 1408 KB Output is correct
40 Correct 1 ms 1408 KB Output is correct
41 Correct 1 ms 1408 KB Output is correct
42 Correct 1 ms 1408 KB Output is correct
43 Correct 1 ms 1408 KB Output is correct
44 Correct 1 ms 1408 KB Output is correct
45 Correct 1 ms 1408 KB Output is correct
46 Correct 1 ms 1408 KB Output is correct
47 Correct 1 ms 1408 KB Output is correct
48 Correct 1 ms 1408 KB Output is correct
49 Correct 1 ms 1408 KB Output is correct
50 Correct 1 ms 1408 KB Output is correct
51 Correct 2 ms 1408 KB Output is correct
52 Correct 2 ms 1408 KB Output is correct
53 Correct 2 ms 1408 KB Output is correct
54 Correct 6 ms 1792 KB Output is correct
55 Correct 8 ms 1792 KB Output is correct
56 Correct 60 ms 5024 KB Output is correct
57 Correct 53 ms 5100 KB Output is correct
58 Correct 58 ms 5100 KB Output is correct
59 Correct 78 ms 7672 KB Output is correct
60 Correct 58 ms 4972 KB Output is correct
61 Correct 51 ms 4844 KB Output is correct
62 Correct 78 ms 7780 KB Output is correct
63 Correct 99 ms 7672 KB Output is correct
64 Correct 84 ms 7664 KB Output is correct
65 Correct 59 ms 4972 KB Output is correct
66 Correct 79 ms 7672 KB Output is correct
67 Correct 73 ms 7636 KB Output is correct
68 Correct 76 ms 7676 KB Output is correct
69 Correct 1 ms 1408 KB Output is correct
70 Correct 1 ms 1408 KB Output is correct
71 Correct 79 ms 7672 KB Output is correct
72 Correct 83 ms 7672 KB Output is correct
73 Correct 79 ms 7672 KB Output is correct
74 Correct 1 ms 1408 KB Output is correct
75 Correct 1 ms 1280 KB Output is correct
76 Correct 1 ms 1408 KB Output is correct
77 Correct 1 ms 1408 KB Output is correct
78 Correct 117 ms 7904 KB Output is correct
79 Correct 133 ms 7800 KB Output is correct
80 Correct 114 ms 7800 KB Output is correct
81 Correct 74 ms 7800 KB Output is correct
82 Correct 114 ms 7800 KB Output is correct
83 Correct 113 ms 7780 KB Output is correct
84 Correct 1 ms 1408 KB Output is correct
85 Correct 1 ms 1408 KB Output is correct
86 Correct 1 ms 1408 KB Output is correct
87 Correct 2 ms 1280 KB Output is correct
88 Correct 2 ms 1408 KB Output is correct
89 Correct 2 ms 1408 KB Output is correct
90 Correct 2 ms 1408 KB Output is correct
91 Correct 2 ms 1408 KB Output is correct
92 Correct 2 ms 1408 KB Output is correct
93 Correct 2 ms 1408 KB Output is correct
94 Correct 2 ms 1408 KB Output is correct
95 Correct 2 ms 1408 KB Output is correct
96 Correct 3 ms 1408 KB Output is correct
97 Correct 2 ms 1408 KB Output is correct
98 Correct 2 ms 1408 KB Output is correct
99 Correct 2 ms 1408 KB Output is correct
100 Correct 2 ms 1408 KB Output is correct
101 Correct 13 ms 2048 KB Output is correct
102 Correct 11 ms 1920 KB Output is correct
103 Correct 134 ms 6388 KB Output is correct
104 Correct 53 ms 4972 KB Output is correct
105 Correct 84 ms 5176 KB Output is correct
106 Correct 107 ms 7800 KB Output is correct
107 Correct 73 ms 4972 KB Output is correct
108 Correct 55 ms 4972 KB Output is correct
109 Correct 74 ms 7928 KB Output is correct
110 Correct 76 ms 7672 KB Output is correct
111 Correct 112 ms 7756 KB Output is correct
112 Correct 176 ms 7796 KB Output is correct
113 Correct 131 ms 8948 KB Output is correct
114 Correct 111 ms 7800 KB Output is correct
115 Correct 108 ms 7672 KB Output is correct