oj.uz

Submission #143267

# Submission time Handle Problem Language Result Execution time Memory
143267 2019-08-13T13:12:35 Z tpoppo Arranging Shoes (IOI19_shoes) C++14
100 / 100
 229 ms 141008 KB 
#include "shoes.h"
#include<bits/stdc++.h>
#define lsb(x) (x&(-x))

using namespace std;

const int MAXN = 2e5 + 1000;
const int OFFSET = 1e5 + 50;
using pii = pair<int,int>;
using ll = long long;
struct fenwick{
  int N;
  vector<ll> ft;
  void init(int n){
      N=n;
      ft.resize(n+1);
  }

  void update(int pos,int delta){
      for(++pos;pos<=N;pos+=lsb(pos)){
          ft[pos]+=delta;
      }
  }
  ll query(int pos){
      ll ans=0;
      for(++pos;pos!=0;pos-=lsb(pos)){
          ans+=ft[pos];
      }
      return ans;
  }
  ll sum(int a,int b){
      return query(b)-query(a-1);
  }

  void debug(){
      for(int i=0;i<N;i++){
          cout<<i<<" "<<query(i)<<endl;
      }
  }
};


deque<int> comb[MAXN];
fenwick ft;
vector<pii> cp;
int v[MAXN];

ll res = 0;
long long count_swaps(std::vector<int> s) {

  for(int i=0;i<s.size();i++){
    int val = s[i];
    if(comb[val + OFFSET].empty()){
      comb[OFFSET - val].push_back(i);
    }else{
      if(s[i] < 0) cp.emplace_back(i,comb[val + OFFSET].front());
      else cp.emplace_back(comb[val + OFFSET].front(),i);
      comb[val + OFFSET].pop_front();
    }
  }

  sort(cp.begin(),cp.end(),[](pii a,pii b){ return a.first + a.second < b.first + b.second;});

  for(int i=0;i<cp.size();i++){
    v[2*i] = cp[i].first;
    v[2*i+1] = cp[i].second;
  }

  ft.init(2*cp.size());
  for(int i=0;i<2*cp.size();i++){
    //cout<<v[i]<< " " << s[v[i]] <<endl;
    res += i - ft.query(v[i]);
    ft.update(v[i],1);
  }
	return res;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<s.size();i++){
               ~^~~~~~~~~
shoes.cpp:64:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<cp.size();i++){
               ~^~~~~~~~~~
shoes.cpp:70:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<2*cp.size();i++){
               ~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135672 KB Output is correct
2 Correct 137 ms 135672 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135672 KB Output is correct
2 Correct 137 ms 135672 KB Output is correct
3 Correct 138 ms 135596 KB Output is correct
4 Correct 137 ms 135640 KB Output is correct
5 Correct 138 ms 135672 KB Output is correct
6 Correct 140 ms 135656 KB Output is correct
7 Correct 140 ms 135584 KB Output is correct
8 Correct 140 ms 135672 KB Output is correct
9 Correct 139 ms 135548 KB Output is correct
10 Correct 138 ms 135544 KB Output is correct
11 Correct 139 ms 135676 KB Output is correct
12 Correct 139 ms 135672 KB Output is correct
13 Correct 137 ms 135672 KB Output is correct
14 Correct 139 ms 135544 KB Output is correct
15 Correct 138 ms 135772 KB Output is correct
16 Correct 138 ms 135544 KB Output is correct
17 Correct 164 ms 135600 KB Output is correct
18 Correct 139 ms 135544 KB Output is correct
19 Correct 136 ms 135752 KB Output is correct
20 Correct 138 ms 135672 KB Output is correct
21 Correct 141 ms 135560 KB Output is correct
22 Correct 139 ms 135644 KB Output is correct
23 Correct 137 ms 135544 KB Output is correct
24 Correct 140 ms 135672 KB Output is correct
25 Correct 139 ms 135672 KB Output is correct
26 Correct 138 ms 135672 KB Output is correct
27 Correct 138 ms 135672 KB Output is correct
28 Correct 138 ms 135672 KB Output is correct
29 Correct 136 ms 135800 KB Output is correct
30 Correct 141 ms 135676 KB Output is correct
31 Correct 147 ms 135720 KB Output is correct
32 Correct 140 ms 135672 KB Output is correct
33 Correct 137 ms 135644 KB Output is correct
34 Correct 146 ms 135672 KB Output is correct
35 Correct 137 ms 135632 KB Output is correct
36 Correct 137 ms 135672 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135672 KB Output is correct
2 Correct 137 ms 135672 KB Output is correct
3 Correct 139 ms 135648 KB Output is correct
4 Correct 136 ms 135644 KB Output is correct
5 Correct 138 ms 135660 KB Output is correct
6 Correct 136 ms 135672 KB Output is correct
7 Correct 136 ms 135672 KB Output is correct
8 Correct 137 ms 135708 KB Output is correct
9 Correct 140 ms 135624 KB Output is correct
10 Correct 136 ms 135548 KB Output is correct
11 Correct 138 ms 135672 KB Output is correct
12 Correct 138 ms 135672 KB Output is correct
13 Correct 138 ms 135644 KB Output is correct
14 Correct 138 ms 135672 KB Output is correct
15 Correct 138 ms 135672 KB Output is correct
16 Correct 139 ms 135776 KB Output is correct
17 Correct 143 ms 135772 KB Output is correct
18 Correct 148 ms 135644 KB Output is correct
19 Correct 144 ms 135644 KB Output is correct
20 Correct 148 ms 136284 KB Output is correct
21 Correct 148 ms 136248 KB Output is correct
22 Correct 188 ms 140624 KB Output is correct
23 Correct 182 ms 140496 KB Output is correct
24 Correct 188 ms 140524 KB Output is correct
25 Correct 195 ms 140908 KB Output is correct
26 Correct 198 ms 140556 KB Output is correct
27 Correct 186 ms 140524 KB Output is correct
28 Correct 185 ms 140908 KB Output is correct
29 Correct 186 ms 140928 KB Output is correct
30 Correct 190 ms 140880 KB Output is correct
31 Correct 191 ms 140524 KB Output is correct
32 Correct 181 ms 140960 KB Output is correct
33 Correct 185 ms 140936 KB Output is correct
34 Correct 186 ms 140908 KB Output is correct
35 Correct 140 ms 135672 KB Output is correct
36 Correct 138 ms 135648 KB Output is correct
37 Correct 182 ms 140980 KB Output is correct
38 Correct 182 ms 140908 KB Output is correct
39 Correct 181 ms 140904 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135696 KB Output is correct
2 Correct 138 ms 135676 KB Output is correct
3 Correct 138 ms 135676 KB Output is correct
4 Correct 137 ms 135672 KB Output is correct
5 Correct 213 ms 140484 KB Output is correct
6 Correct 196 ms 140624 KB Output is correct
7 Correct 209 ms 140524 KB Output is correct
8 Correct 212 ms 141008 KB Output is correct
9 Correct 229 ms 140676 KB Output is correct
10 Correct 201 ms 140524 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135672 KB Output is correct
2 Correct 137 ms 135672 KB Output is correct
3 Correct 138 ms 135596 KB Output is correct
4 Correct 137 ms 135640 KB Output is correct
5 Correct 138 ms 135672 KB Output is correct
6 Correct 140 ms 135656 KB Output is correct
7 Correct 140 ms 135584 KB Output is correct
8 Correct 140 ms 135672 KB Output is correct
9 Correct 139 ms 135548 KB Output is correct
10 Correct 138 ms 135544 KB Output is correct
11 Correct 139 ms 135676 KB Output is correct
12 Correct 139 ms 135672 KB Output is correct
13 Correct 137 ms 135672 KB Output is correct
14 Correct 139 ms 135544 KB Output is correct
15 Correct 138 ms 135772 KB Output is correct
16 Correct 138 ms 135544 KB Output is correct
17 Correct 164 ms 135600 KB Output is correct
18 Correct 139 ms 135544 KB Output is correct
19 Correct 136 ms 135752 KB Output is correct
20 Correct 138 ms 135672 KB Output is correct
21 Correct 141 ms 135560 KB Output is correct
22 Correct 139 ms 135644 KB Output is correct
23 Correct 137 ms 135544 KB Output is correct
24 Correct 140 ms 135672 KB Output is correct
25 Correct 139 ms 135672 KB Output is correct
26 Correct 138 ms 135672 KB Output is correct
27 Correct 138 ms 135672 KB Output is correct
28 Correct 138 ms 135672 KB Output is correct
29 Correct 136 ms 135800 KB Output is correct
30 Correct 141 ms 135676 KB Output is correct
31 Correct 147 ms 135720 KB Output is correct
32 Correct 140 ms 135672 KB Output is correct
33 Correct 137 ms 135644 KB Output is correct
34 Correct 146 ms 135672 KB Output is correct
35 Correct 137 ms 135632 KB Output is correct
36 Correct 137 ms 135672 KB Output is correct
37 Correct 169 ms 135672 KB Output is correct
38 Correct 141 ms 135572 KB Output is correct
39 Correct 138 ms 135672 KB Output is correct
40 Correct 141 ms 135672 KB Output is correct
41 Correct 149 ms 135672 KB Output is correct
42 Correct 137 ms 135676 KB Output is correct
43 Correct 139 ms 135672 KB Output is correct
44 Correct 140 ms 135544 KB Output is correct
45 Correct 140 ms 135796 KB Output is correct
46 Correct 156 ms 135800 KB Output is correct
47 Correct 142 ms 135672 KB Output is correct
48 Correct 138 ms 135672 KB Output is correct
49 Correct 141 ms 135672 KB Output is correct
50 Correct 145 ms 135828 KB Output is correct
51 Correct 154 ms 135644 KB Output is correct
52 Correct 140 ms 135672 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 135672 KB Output is correct
2 Correct 137 ms 135672 KB Output is correct
3 Correct 138 ms 135596 KB Output is correct
4 Correct 137 ms 135640 KB Output is correct
5 Correct 138 ms 135672 KB Output is correct
6 Correct 140 ms 135656 KB Output is correct
7 Correct 140 ms 135584 KB Output is correct
8 Correct 140 ms 135672 KB Output is correct
9 Correct 139 ms 135548 KB Output is correct
10 Correct 138 ms 135544 KB Output is correct
11 Correct 139 ms 135676 KB Output is correct
12 Correct 139 ms 135672 KB Output is correct
13 Correct 137 ms 135672 KB Output is correct
14 Correct 139 ms 135544 KB Output is correct
15 Correct 138 ms 135772 KB Output is correct
16 Correct 138 ms 135544 KB Output is correct
17 Correct 164 ms 135600 KB Output is correct
18 Correct 139 ms 135544 KB Output is correct
19 Correct 136 ms 135752 KB Output is correct
20 Correct 138 ms 135672 KB Output is correct
21 Correct 141 ms 135560 KB Output is correct
22 Correct 139 ms 135644 KB Output is correct
23 Correct 137 ms 135544 KB Output is correct
24 Correct 140 ms 135672 KB Output is correct
25 Correct 139 ms 135672 KB Output is correct
26 Correct 138 ms 135672 KB Output is correct
27 Correct 138 ms 135672 KB Output is correct
28 Correct 138 ms 135672 KB Output is correct
29 Correct 136 ms 135800 KB Output is correct
30 Correct 141 ms 135676 KB Output is correct
31 Correct 147 ms 135720 KB Output is correct
32 Correct 140 ms 135672 KB Output is correct
33 Correct 137 ms 135644 KB Output is correct
34 Correct 146 ms 135672 KB Output is correct
35 Correct 137 ms 135632 KB Output is correct
36 Correct 137 ms 135672 KB Output is correct
37 Correct 139 ms 135648 KB Output is correct
38 Correct 136 ms 135644 KB Output is correct
39 Correct 138 ms 135660 KB Output is correct
40 Correct 136 ms 135672 KB Output is correct
41 Correct 136 ms 135672 KB Output is correct
42 Correct 137 ms 135708 KB Output is correct
43 Correct 140 ms 135624 KB Output is correct
44 Correct 136 ms 135548 KB Output is correct
45 Correct 138 ms 135672 KB Output is correct
46 Correct 138 ms 135672 KB Output is correct
47 Correct 138 ms 135644 KB Output is correct
48 Correct 138 ms 135672 KB Output is correct
49 Correct 138 ms 135672 KB Output is correct
50 Correct 139 ms 135776 KB Output is correct
51 Correct 143 ms 135772 KB Output is correct
52 Correct 148 ms 135644 KB Output is correct
53 Correct 144 ms 135644 KB Output is correct
54 Correct 148 ms 136284 KB Output is correct
55 Correct 148 ms 136248 KB Output is correct
56 Correct 188 ms 140624 KB Output is correct
57 Correct 182 ms 140496 KB Output is correct
58 Correct 188 ms 140524 KB Output is correct
59 Correct 195 ms 140908 KB Output is correct
60 Correct 198 ms 140556 KB Output is correct
61 Correct 186 ms 140524 KB Output is correct
62 Correct 185 ms 140908 KB Output is correct
63 Correct 186 ms 140928 KB Output is correct
64 Correct 190 ms 140880 KB Output is correct
65 Correct 191 ms 140524 KB Output is correct
66 Correct 181 ms 140960 KB Output is correct
67 Correct 185 ms 140936 KB Output is correct
68 Correct 186 ms 140908 KB Output is correct
69 Correct 140 ms 135672 KB Output is correct
70 Correct 138 ms 135648 KB Output is correct
71 Correct 182 ms 140980 KB Output is correct
72 Correct 182 ms 140908 KB Output is correct
73 Correct 181 ms 140904 KB Output is correct
74 Correct 138 ms 135696 KB Output is correct
75 Correct 138 ms 135676 KB Output is correct
76 Correct 138 ms 135676 KB Output is correct
77 Correct 137 ms 135672 KB Output is correct
78 Correct 213 ms 140484 KB Output is correct
79 Correct 196 ms 140624 KB Output is correct
80 Correct 209 ms 140524 KB Output is correct
81 Correct 212 ms 141008 KB Output is correct
82 Correct 229 ms 140676 KB Output is correct
83 Correct 201 ms 140524 KB Output is correct
84 Correct 169 ms 135672 KB Output is correct
85 Correct 141 ms 135572 KB Output is correct
86 Correct 138 ms 135672 KB Output is correct
87 Correct 141 ms 135672 KB Output is correct
88 Correct 149 ms 135672 KB Output is correct
89 Correct 137 ms 135676 KB Output is correct
90 Correct 139 ms 135672 KB Output is correct
91 Correct 140 ms 135544 KB Output is correct
92 Correct 140 ms 135796 KB Output is correct
93 Correct 156 ms 135800 KB Output is correct
94 Correct 142 ms 135672 KB Output is correct
95 Correct 138 ms 135672 KB Output is correct
96 Correct 141 ms 135672 KB Output is correct
97 Correct 145 ms 135828 KB Output is correct
98 Correct 154 ms 135644 KB Output is correct
99 Correct 140 ms 135672 KB Output is correct
100 Correct 139 ms 135680 KB Output is correct
101 Correct 145 ms 136184 KB Output is correct
102 Correct 147 ms 136192 KB Output is correct
103 Correct 218 ms 140620 KB Output is correct
104 Correct 193 ms 140524 KB Output is correct
105 Correct 205 ms 140432 KB Output is correct
106 Correct 203 ms 140420 KB Output is correct
107 Correct 199 ms 140468 KB Output is correct
108 Correct 189 ms 140396 KB Output is correct
109 Correct 194 ms 140908 KB Output is correct
110 Correct 187 ms 140908 KB Output is correct
111 Correct 206 ms 140396 KB Output is correct
112 Correct 212 ms 140524 KB Output is correct
113 Correct 204 ms 140524 KB Output is correct
114 Correct 205 ms 140396 KB Output is correct
115 Correct 208 ms 140396 KB Output is correct