oj.uz

Submission #144182

# Submission time Handle Problem Language Result Execution time Memory
144182 2019-08-16T09:37:07 Z xiaowuc1 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 943 ms 146904 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int BIT_SZ = 200005;
int bit[BIT_SZ];
void inc(int idx) {
  idx += 2;
  while(idx < BIT_SZ) {
    bit[idx]++;
    idx += idx & -idx;
  }
}
int qry(int idx) {
  idx += 2;
  int ret = 0;
  while(idx) {
    ret += bit[idx];
    idx -= idx & -idx;
  }
  return ret;
}

ll count_swaps(vector<int> v) {
  ll ret = 0;
  map<int, queue<int>> dp;
  for(int i = 0; i < v.size(); i++) {
    dp[v[i]].push(i);
  }
  for(int i = 0; i < v.size(); i++) {
    if(!dp.count(v[i])) continue;
    if(dp[v[i]].front() != i) {
      assert(dp[v[i]].front() > i);
      continue;
    }
    if(v[i] > 0) ret++;
    dp[v[i]].pop();
    if(dp[v[i]].size() == 0) dp.erase(v[i]);
    inc(i);
    assert(dp[-v[i]].size());
    int other = dp[-v[i]].front(); dp[-v[i]].pop();
    if(dp[-v[i]].size() == 0) dp.erase(-v[i]);
    ret += other - qry(other);
    inc(other);
  }
  return ret;
}

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < v.size(); i++) {
                  ~~^~~~~~~~~~
shoes.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < v.size(); i++) {
                  ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 296 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 292 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 324 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 6 ms 644 KB Output is correct
21 Correct 6 ms 632 KB Output is correct
22 Correct 42 ms 3480 KB Output is correct
23 Correct 36 ms 3460 KB Output is correct
24 Correct 42 ms 3448 KB Output is correct
25 Correct 35 ms 3448 KB Output is correct
26 Correct 42 ms 3448 KB Output is correct
27 Correct 35 ms 3448 KB Output is correct
28 Correct 37 ms 3448 KB Output is correct
29 Correct 37 ms 3452 KB Output is correct
30 Correct 37 ms 3448 KB Output is correct
31 Correct 43 ms 3580 KB Output is correct
32 Correct 38 ms 3576 KB Output is correct
33 Correct 105 ms 3484 KB Output is correct
34 Correct 39 ms 3448 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 39 ms 3704 KB Output is correct
38 Correct 36 ms 3512 KB Output is correct
39 Correct 36 ms 3448 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 683 ms 146720 KB Output is correct
6 Correct 225 ms 15280 KB Output is correct
7 Correct 671 ms 146720 KB Output is correct
8 Correct 45 ms 3576 KB Output is correct
9 Correct 682 ms 146784 KB Output is correct
10 Correct 495 ms 74788 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 296 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 292 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 324 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 476 KB Output is correct
40 Correct 3 ms 632 KB Output is correct
41 Correct 5 ms 1796 KB Output is correct
42 Correct 5 ms 1784 KB Output is correct
43 Correct 5 ms 1656 KB Output is correct
44 Correct 5 ms 1528 KB Output is correct
45 Correct 5 ms 1272 KB Output is correct
46 Correct 4 ms 1144 KB Output is correct
47 Correct 4 ms 1144 KB Output is correct
48 Correct 4 ms 888 KB Output is correct
49 Correct 3 ms 632 KB Output is correct
50 Correct 3 ms 352 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 6 ms 1784 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 296 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 292 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 324 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 6 ms 644 KB Output is correct
55 Correct 6 ms 632 KB Output is correct
56 Correct 42 ms 3480 KB Output is correct
57 Correct 36 ms 3460 KB Output is correct
58 Correct 42 ms 3448 KB Output is correct
59 Correct 35 ms 3448 KB Output is correct
60 Correct 42 ms 3448 KB Output is correct
61 Correct 35 ms 3448 KB Output is correct
62 Correct 37 ms 3448 KB Output is correct
63 Correct 37 ms 3452 KB Output is correct
64 Correct 37 ms 3448 KB Output is correct
65 Correct 43 ms 3580 KB Output is correct
66 Correct 38 ms 3576 KB Output is correct
67 Correct 105 ms 3484 KB Output is correct
68 Correct 39 ms 3448 KB Output is correct
69 Correct 2 ms 376 KB Output is correct
70 Correct 2 ms 376 KB Output is correct
71 Correct 39 ms 3704 KB Output is correct
72 Correct 36 ms 3512 KB Output is correct
73 Correct 36 ms 3448 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 683 ms 146720 KB Output is correct
79 Correct 225 ms 15280 KB Output is correct
80 Correct 671 ms 146720 KB Output is correct
81 Correct 45 ms 3576 KB Output is correct
82 Correct 682 ms 146784 KB Output is correct
83 Correct 495 ms 74788 KB Output is correct
84 Correct 2 ms 376 KB Output is correct
85 Correct 2 ms 376 KB Output is correct
86 Correct 2 ms 476 KB Output is correct
87 Correct 3 ms 632 KB Output is correct
88 Correct 5 ms 1796 KB Output is correct
89 Correct 5 ms 1784 KB Output is correct
90 Correct 5 ms 1656 KB Output is correct
91 Correct 5 ms 1528 KB Output is correct
92 Correct 5 ms 1272 KB Output is correct
93 Correct 4 ms 1144 KB Output is correct
94 Correct 4 ms 1144 KB Output is correct
95 Correct 4 ms 888 KB Output is correct
96 Correct 3 ms 632 KB Output is correct
97 Correct 3 ms 352 KB Output is correct
98 Correct 2 ms 376 KB Output is correct
99 Correct 6 ms 1784 KB Output is correct
100 Correct 5 ms 1784 KB Output is correct
101 Correct 55 ms 13608 KB Output is correct
102 Correct 25 ms 3448 KB Output is correct
103 Correct 836 ms 146628 KB Output is correct
104 Correct 735 ms 146676 KB Output is correct
105 Correct 626 ms 84636 KB Output is correct
106 Correct 669 ms 146664 KB Output is correct
107 Correct 307 ms 18712 KB Output is correct
108 Correct 395 ms 34892 KB Output is correct
109 Correct 40 ms 3576 KB Output is correct
110 Correct 36 ms 3456 KB Output is correct
111 Correct 655 ms 130780 KB Output is correct
112 Correct 943 ms 114936 KB Output is correct
113 Correct 293 ms 20472 KB Output is correct
114 Correct 812 ms 146904 KB Output is correct
115 Correct 761 ms 146680 KB Output is correct