oj.uz

Submission #145651

# Submission time Handle Problem Language Result Execution time Memory
145651 2019-08-20T16:33:53 Z Xylofo Arranging Shoes (IOI19_shoes) C++14
100 / 100
 292 ms 141176 KB 
#include "shoes.h"

#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
#define eb emplace_back
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;


struct FT {
  vector<ll> s;
  FT(int n) : s(n) {}
  void update(int pos, ll dif) { // a[pos] += dif
    for (; pos < sz(s); pos |= pos + 1) s[pos] += dif;
  }
  ll query(int pos) { // sum of values in [0, pos)
    ll res = 0;
    for (; pos > 0; pos &= pos - 1) res += s[pos-1];
    return res;
  }
};

ll count_swaps(vi s) {
  int n = sz(s)/2;
  vector<deque<int>> nxtR(n+1);
  vector<deque<int>> nxtL(n+1);
  rep(i,0,2*n) {
    if(s[i] > 0) nxtR[s[i]].eb(i);
    else nxtL[-s[i]].eb(i);
  }
  FT ft(2*n+1); // pos delta
  rep(i,1,2*n+1) ft.update(i, 1);
  ll ans = 0;

  vi alive(2*n, 1);

  auto mv = [&](int target, int i, int q) {
    int pos = ft.query(i+1);
    ans += pos - target;
    ft.update(0, 1);
    ft.update(i+1, -1);

    alive[nxtL[q].front()] = 0;
    alive[nxtR[q].front()] = 0;
    nxtL[q].pop_front();
    nxtR[q].pop_front();
  };

  int j = 0;
  rep(i,0,n) {
    while(alive[j] == 0) ++j;
    int q = abs(s[j]);
    if (s[j] < 0) // left shoe
      mv(2*i+1, nxtR[q].front(), q);
    if (s[j] > 0) // right shoe
      mv(2*i, nxtL[q].front(), q);
  }
  return ans;
}

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 376 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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 348 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 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 252 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 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 256 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 256 KB Output is correct
23 Correct 2 ms 252 KB Output is correct
24 Correct 2 ms 256 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 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 256 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 256 KB Output is correct
35 Correct 3 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 376 KB Output is correct
3 Correct 2 ms 256 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 256 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 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 760 KB Output is correct
18 Correct 3 ms 1784 KB Output is correct
19 Correct 4 ms 1784 KB Output is correct
20 Correct 20 ms 14344 KB Output is correct
21 Correct 20 ms 14456 KB Output is correct
22 Correct 192 ms 141100 KB Output is correct
23 Correct 190 ms 141176 KB Output is correct
24 Correct 190 ms 140920 KB Output is correct
25 Correct 191 ms 140788 KB Output is correct
26 Correct 188 ms 141148 KB Output is correct
27 Correct 186 ms 140824 KB Output is correct
28 Correct 189 ms 141048 KB Output is correct
29 Correct 186 ms 141048 KB Output is correct
30 Correct 187 ms 141052 KB Output is correct
31 Correct 188 ms 141104 KB Output is correct
32 Correct 188 ms 140972 KB Output is correct
33 Correct 191 ms 140920 KB Output is correct
34 Correct 184 ms 141048 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 185 ms 141020 KB Output is correct
38 Correct 188 ms 140972 KB Output is correct
39 Correct 184 ms 141176 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 252 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 263 ms 140280 KB Output is correct
6 Correct 224 ms 140200 KB Output is correct
7 Correct 263 ms 140152 KB Output is correct
8 Correct 188 ms 140980 KB Output is correct
9 Correct 276 ms 140256 KB Output is correct
10 Correct 250 ms 140252 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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 348 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 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 252 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 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 256 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 256 KB Output is correct
23 Correct 2 ms 252 KB Output is correct
24 Correct 2 ms 256 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 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 256 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 256 KB Output is correct
35 Correct 3 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 380 KB Output is correct
39 Correct 2 ms 504 KB Output is correct
40 Correct 3 ms 760 KB Output is correct
41 Correct 4 ms 1784 KB Output is correct
42 Correct 4 ms 1656 KB Output is correct
43 Correct 4 ms 1660 KB Output is correct
44 Correct 4 ms 1784 KB Output is correct
45 Correct 4 ms 1660 KB Output is correct
46 Correct 4 ms 1660 KB Output is correct
47 Correct 4 ms 1684 KB Output is correct
48 Correct 4 ms 1656 KB Output is correct
49 Correct 4 ms 1656 KB Output is correct
50 Correct 4 ms 1656 KB Output is correct
51 Correct 4 ms 1656 KB Output is correct
52 Correct 4 ms 1656 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 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 348 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 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 252 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 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 256 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 256 KB Output is correct
23 Correct 2 ms 252 KB Output is correct
24 Correct 2 ms 256 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 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 256 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 256 KB Output is correct
35 Correct 3 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 256 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 256 KB Output is correct
45 Correct 2 ms 256 KB Output is correct
46 Correct 2 ms 256 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 256 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 504 KB Output is correct
51 Correct 3 ms 760 KB Output is correct
52 Correct 3 ms 1784 KB Output is correct
53 Correct 4 ms 1784 KB Output is correct
54 Correct 20 ms 14344 KB Output is correct
55 Correct 20 ms 14456 KB Output is correct
56 Correct 192 ms 141100 KB Output is correct
57 Correct 190 ms 141176 KB Output is correct
58 Correct 190 ms 140920 KB Output is correct
59 Correct 191 ms 140788 KB Output is correct
60 Correct 188 ms 141148 KB Output is correct
61 Correct 186 ms 140824 KB Output is correct
62 Correct 189 ms 141048 KB Output is correct
63 Correct 186 ms 141048 KB Output is correct
64 Correct 187 ms 141052 KB Output is correct
65 Correct 188 ms 141104 KB Output is correct
66 Correct 188 ms 140972 KB Output is correct
67 Correct 191 ms 140920 KB Output is correct
68 Correct 184 ms 141048 KB Output is correct
69 Correct 2 ms 256 KB Output is correct
70 Correct 2 ms 376 KB Output is correct
71 Correct 185 ms 141020 KB Output is correct
72 Correct 188 ms 140972 KB Output is correct
73 Correct 184 ms 141176 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 252 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 263 ms 140280 KB Output is correct
79 Correct 224 ms 140200 KB Output is correct
80 Correct 263 ms 140152 KB Output is correct
81 Correct 188 ms 140980 KB Output is correct
82 Correct 276 ms 140256 KB Output is correct
83 Correct 250 ms 140252 KB Output is correct
84 Correct 2 ms 256 KB Output is correct
85 Correct 2 ms 380 KB Output is correct
86 Correct 2 ms 504 KB Output is correct
87 Correct 3 ms 760 KB Output is correct
88 Correct 4 ms 1784 KB Output is correct
89 Correct 4 ms 1656 KB Output is correct
90 Correct 4 ms 1660 KB Output is correct
91 Correct 4 ms 1784 KB Output is correct
92 Correct 4 ms 1660 KB Output is correct
93 Correct 4 ms 1660 KB Output is correct
94 Correct 4 ms 1684 KB Output is correct
95 Correct 4 ms 1656 KB Output is correct
96 Correct 4 ms 1656 KB Output is correct
97 Correct 4 ms 1656 KB Output is correct
98 Correct 4 ms 1656 KB Output is correct
99 Correct 4 ms 1656 KB Output is correct
100 Correct 4 ms 1656 KB Output is correct
101 Correct 23 ms 14252 KB Output is correct
102 Correct 21 ms 14328 KB Output is correct
103 Correct 276 ms 140276 KB Output is correct
104 Correct 274 ms 140280 KB Output is correct
105 Correct 263 ms 140124 KB Output is correct
106 Correct 264 ms 140152 KB Output is correct
107 Correct 229 ms 140152 KB Output is correct
108 Correct 232 ms 140156 KB Output is correct
109 Correct 186 ms 141040 KB Output is correct
110 Correct 186 ms 140960 KB Output is correct
111 Correct 264 ms 140208 KB Output is correct
112 Correct 273 ms 140300 KB Output is correct
113 Correct 228 ms 140152 KB Output is correct
114 Correct 268 ms 140152 KB Output is correct
115 Correct 292 ms 140292 KB Output is correct