#include "shoes.h"
#include <cstdio>
#include <cassert>
#include <iostream>
#include <vector>
using namespace std;
int seg[300000];
void update(int s,int e,int u,int ind){
if(u<s || u>e){
return;
}
if(s==e && s==u){
seg[ind]=1;
return;
}
int mid=(s+e)/2;
update(s,mid,u,ind*2);
update(mid+1,e,u,ind*2+1);
seg[ind]=seg[ind*2]+seg[ind*2+1];
}
int query(int s,int e , int qs,int qe,int ind){
if(qs<=s && e<=qe){
return seg[ind];
}
if(qs>e || qe<s){
return 0;
}
int mid=(s+e)/2;
int p1=query(s,mid,qs,qe,ind*2);
int p2=query(mid+1,e,qs,qe,ind*2+1);
return p1+p2;
}
long long count_swaps(std::vector<int> s) {
vector < int > row;
vector < int > row2;
vector < vector < int > > l(s.size()+1,row);
vector < vector < int > > r(s.size()+1,row2);
int li[s.size()+1]={};
int ri[s.size()+1]={};
for(int i=0;i<s.size();i++){
if(s[i]>0){
r[s[i]].push_back(i);
}
else
l[-s[i]].push_back(i);
}
int ans=0;
/// n log n
int v[s.size()]={};
for(int i=0;i<s.size();i++){
int cou=0;
if(v[i]==1){
continue;
}
int f=-s[i];
if(f>0){
li[f]++;
int start=i;
int e=r[f][ri[f]];
ri[f]++;
int q=query(1,s.size(),start+1,e+1,1);
v[start]=1;
v[e]=1;
update(1,s.size(),start+1,1);
update(1,s.size(),e+1,1);
// cout<<q<<endl;
cou=cou + e-start-1-q;
}
else{
cou=1;
ri[-f]++;
int start=i;
int e=l[-f][li[-f]];
li[-f]++;
int q=query(1,s.size(),start+1,e+1,1);
v[start]=1;
v[e]=1;
update(1,s.size(),start+1,1);
update(1,s.size(),e+1,1);
// cout<<q<<endl;
cou=cou + e-start-1-q;
}
ans+=cou;
}
return ans;
/*
/// n^2
int v[s.size()]={};
for(int i=0;i<s.size();i++){
if(v[i]==1)
continue;
int cou=0;
if(s[i]>0)
cou=1;
int f=-s[i];
for(int j=i+1;j<s.size();j++){
if(s[j]==f && v[j]!=1){
v[j]=1;
v[i]=1;
// cout<<cou<<" "<<i<<" "<<j<<endl;
break;
}
if(v[j]==0){
cou++;
}
}
ans+=cou;
}
*/
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | for(int i=0;i<s.size();i++){
| ~^~~~~~~~~
shoes.cpp:67:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
67 | for(int i=0;i<s.size();i++){
| ~^~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
3 |
Correct |
1 ms |
256 KB |
Output is correct |
4 |
Correct |
1 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
256 KB |
Output is correct |
6 |
Correct |
1 ms |
256 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
256 KB |
Output is correct |
9 |
Correct |
0 ms |
256 KB |
Output is correct |
10 |
Correct |
1 ms |
256 KB |
Output is correct |
11 |
Correct |
1 ms |
256 KB |
Output is correct |
12 |
Correct |
1 ms |
256 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
1 ms |
256 KB |
Output is correct |
15 |
Correct |
0 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
1 ms |
256 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
0 ms |
256 KB |
Output is correct |
20 |
Correct |
0 ms |
256 KB |
Output is correct |
21 |
Correct |
0 ms |
256 KB |
Output is correct |
22 |
Correct |
0 ms |
256 KB |
Output is correct |
23 |
Correct |
0 ms |
256 KB |
Output is correct |
24 |
Correct |
1 ms |
256 KB |
Output is correct |
25 |
Correct |
1 ms |
256 KB |
Output is correct |
26 |
Correct |
0 ms |
256 KB |
Output is correct |
27 |
Correct |
1 ms |
256 KB |
Output is correct |
28 |
Correct |
1 ms |
256 KB |
Output is correct |
29 |
Correct |
1 ms |
256 KB |
Output is correct |
30 |
Correct |
0 ms |
256 KB |
Output is correct |
31 |
Correct |
1 ms |
256 KB |
Output is correct |
32 |
Correct |
1 ms |
256 KB |
Output is correct |
33 |
Correct |
1 ms |
256 KB |
Output is correct |
34 |
Correct |
0 ms |
256 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
3 |
Correct |
0 ms |
256 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
256 KB |
Output is correct |
6 |
Correct |
1 ms |
256 KB |
Output is correct |
7 |
Correct |
1 ms |
256 KB |
Output is correct |
8 |
Correct |
1 ms |
256 KB |
Output is correct |
9 |
Correct |
0 ms |
256 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
0 ms |
256 KB |
Output is correct |
12 |
Correct |
0 ms |
256 KB |
Output is correct |
13 |
Correct |
0 ms |
256 KB |
Output is correct |
14 |
Correct |
0 ms |
256 KB |
Output is correct |
15 |
Correct |
1 ms |
384 KB |
Output is correct |
16 |
Correct |
1 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
1 ms |
512 KB |
Output is correct |
19 |
Correct |
2 ms |
512 KB |
Output is correct |
20 |
Correct |
10 ms |
2176 KB |
Output is correct |
21 |
Correct |
10 ms |
2176 KB |
Output is correct |
22 |
Runtime error |
73 ms |
30872 KB |
Execution killed with signal 11 |
23 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
0 ms |
256 KB |
Output is correct |
3 |
Correct |
0 ms |
256 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Runtime error |
81 ms |
41080 KB |
Execution killed with signal 11 |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
3 |
Correct |
1 ms |
256 KB |
Output is correct |
4 |
Correct |
1 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
256 KB |
Output is correct |
6 |
Correct |
1 ms |
256 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
256 KB |
Output is correct |
9 |
Correct |
0 ms |
256 KB |
Output is correct |
10 |
Correct |
1 ms |
256 KB |
Output is correct |
11 |
Correct |
1 ms |
256 KB |
Output is correct |
12 |
Correct |
1 ms |
256 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
1 ms |
256 KB |
Output is correct |
15 |
Correct |
0 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
1 ms |
256 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
0 ms |
256 KB |
Output is correct |
20 |
Correct |
0 ms |
256 KB |
Output is correct |
21 |
Correct |
0 ms |
256 KB |
Output is correct |
22 |
Correct |
0 ms |
256 KB |
Output is correct |
23 |
Correct |
0 ms |
256 KB |
Output is correct |
24 |
Correct |
1 ms |
256 KB |
Output is correct |
25 |
Correct |
1 ms |
256 KB |
Output is correct |
26 |
Correct |
0 ms |
256 KB |
Output is correct |
27 |
Correct |
1 ms |
256 KB |
Output is correct |
28 |
Correct |
1 ms |
256 KB |
Output is correct |
29 |
Correct |
1 ms |
256 KB |
Output is correct |
30 |
Correct |
0 ms |
256 KB |
Output is correct |
31 |
Correct |
1 ms |
256 KB |
Output is correct |
32 |
Correct |
1 ms |
256 KB |
Output is correct |
33 |
Correct |
1 ms |
256 KB |
Output is correct |
34 |
Correct |
0 ms |
256 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
0 ms |
256 KB |
Output is correct |
37 |
Correct |
1 ms |
256 KB |
Output is correct |
38 |
Correct |
1 ms |
384 KB |
Output is correct |
39 |
Correct |
1 ms |
384 KB |
Output is correct |
40 |
Correct |
1 ms |
384 KB |
Output is correct |
41 |
Correct |
1 ms |
512 KB |
Output is correct |
42 |
Correct |
1 ms |
512 KB |
Output is correct |
43 |
Correct |
2 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
512 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
46 |
Correct |
1 ms |
512 KB |
Output is correct |
47 |
Correct |
1 ms |
512 KB |
Output is correct |
48 |
Correct |
1 ms |
512 KB |
Output is correct |
49 |
Correct |
1 ms |
512 KB |
Output is correct |
50 |
Correct |
1 ms |
512 KB |
Output is correct |
51 |
Correct |
1 ms |
512 KB |
Output is correct |
52 |
Correct |
1 ms |
512 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
256 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
3 |
Correct |
1 ms |
256 KB |
Output is correct |
4 |
Correct |
1 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
256 KB |
Output is correct |
6 |
Correct |
1 ms |
256 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
256 KB |
Output is correct |
9 |
Correct |
0 ms |
256 KB |
Output is correct |
10 |
Correct |
1 ms |
256 KB |
Output is correct |
11 |
Correct |
1 ms |
256 KB |
Output is correct |
12 |
Correct |
1 ms |
256 KB |
Output is correct |
13 |
Correct |
1 ms |
256 KB |
Output is correct |
14 |
Correct |
1 ms |
256 KB |
Output is correct |
15 |
Correct |
0 ms |
256 KB |
Output is correct |
16 |
Correct |
0 ms |
256 KB |
Output is correct |
17 |
Correct |
1 ms |
256 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
0 ms |
256 KB |
Output is correct |
20 |
Correct |
0 ms |
256 KB |
Output is correct |
21 |
Correct |
0 ms |
256 KB |
Output is correct |
22 |
Correct |
0 ms |
256 KB |
Output is correct |
23 |
Correct |
0 ms |
256 KB |
Output is correct |
24 |
Correct |
1 ms |
256 KB |
Output is correct |
25 |
Correct |
1 ms |
256 KB |
Output is correct |
26 |
Correct |
0 ms |
256 KB |
Output is correct |
27 |
Correct |
1 ms |
256 KB |
Output is correct |
28 |
Correct |
1 ms |
256 KB |
Output is correct |
29 |
Correct |
1 ms |
256 KB |
Output is correct |
30 |
Correct |
0 ms |
256 KB |
Output is correct |
31 |
Correct |
1 ms |
256 KB |
Output is correct |
32 |
Correct |
1 ms |
256 KB |
Output is correct |
33 |
Correct |
1 ms |
256 KB |
Output is correct |
34 |
Correct |
0 ms |
256 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
0 ms |
256 KB |
Output is correct |
37 |
Correct |
0 ms |
256 KB |
Output is correct |
38 |
Correct |
0 ms |
256 KB |
Output is correct |
39 |
Correct |
0 ms |
256 KB |
Output is correct |
40 |
Correct |
1 ms |
256 KB |
Output is correct |
41 |
Correct |
1 ms |
256 KB |
Output is correct |
42 |
Correct |
1 ms |
256 KB |
Output is correct |
43 |
Correct |
0 ms |
256 KB |
Output is correct |
44 |
Correct |
1 ms |
384 KB |
Output is correct |
45 |
Correct |
0 ms |
256 KB |
Output is correct |
46 |
Correct |
0 ms |
256 KB |
Output is correct |
47 |
Correct |
0 ms |
256 KB |
Output is correct |
48 |
Correct |
0 ms |
256 KB |
Output is correct |
49 |
Correct |
1 ms |
384 KB |
Output is correct |
50 |
Correct |
1 ms |
384 KB |
Output is correct |
51 |
Correct |
1 ms |
384 KB |
Output is correct |
52 |
Correct |
1 ms |
512 KB |
Output is correct |
53 |
Correct |
2 ms |
512 KB |
Output is correct |
54 |
Correct |
10 ms |
2176 KB |
Output is correct |
55 |
Correct |
10 ms |
2176 KB |
Output is correct |
56 |
Runtime error |
73 ms |
30872 KB |
Execution killed with signal 11 |
57 |
Halted |
0 ms |
0 KB |
- |