oj.uz

Submission #313013

# Submission time Handle Problem Language Result Execution time Memory
313013 2020-10-15T00:31:37 Z hackermub Arranging Shoes (IOI19_shoes) C++17
100 / 100
 211 ms 141424 KB 
#include<bits/stdc++.h>
#include "shoes.h"
using namespace std;

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

#define ll long long
#define pii pair<int,int>
#define fi first
#define se second
#define pb push_back
#define all(v) v.begin(),v.end()
#define sz(v) (int)v.size()
#define uid uniform_int_distribution<int>
//mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
const int MOD = 1e9+7;
const int64_t INF = 1e18;

const int MAXN = 2e5+7;
int N;
vector<ll> tree(MAXN);

void update(int idx,int val=1){
	while(idx<=N){
		tree[idx]+=val;
		idx+=idx&(-idx);
	}
}

ll read(int idx){
	ll sum=0;
	while(idx>0){
		sum+=tree[idx];
		idx-=idx&(-idx);
	}
	return sum;
}

ll query(int L,int R){
	return read(R)-read(L-1);
}

long long count_swaps(std::vector<int> s) {
	N=s.size();
	int n=N/2;
	queue<int> idx[2*n+1];
	for(int i=0;i<2*n;i++){
		//cout<<s[i]+n<<" ";
		idx[s[i]+n].push(i+1);
	}
	vector<int> perm;
	vector<bool> vis(2*n+1);
	for(int i=0;i<2*n;i++)if(!vis[i]){
		if(s[i]<0){
			perm.pb(i+1); vis[i]=1;
			perm.pb(idx[-s[i]+n].front()); idx[-s[i]+n].pop();
			vis[perm.back()-1]=1;
		}else{
			perm.pb(idx[-s[i]+n].front()); idx[-s[i]+n].pop();
			vis[perm.back()-1]=1;
			perm.pb(i+1); vis[i]=1;
		}
		idx[s[i]+n].pop();
	}
	ll ans=0;
	for(auto x:perm){
		ans+=query(x+1,N);
		update(x);
	}
	return ans;
}

#ifdef OFFLINE

int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie();
    //If you hack my code , You are gay
   	int n;
   	cin>>n;
   	vector<int> s(2*n);
   	for(int i=0;i<2*n;i++){
   		cin>>s[i];
   	}
   	cout<<count_swaps(s);
    return 0;
}

#endif

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 1 ms 1920 KB Output is correct
5 Correct 2 ms 1920 KB Output is correct
6 Correct 1 ms 1920 KB Output is correct
7 Correct 1 ms 1920 KB Output is correct
8 Correct 1 ms 1920 KB Output is correct
9 Correct 1 ms 1920 KB Output is correct
10 Correct 1 ms 1920 KB Output is correct
11 Correct 1 ms 1920 KB Output is correct
12 Correct 1 ms 1920 KB Output is correct
13 Correct 1 ms 1920 KB Output is correct
14 Correct 1 ms 1920 KB Output is correct
15 Correct 1 ms 1920 KB Output is correct
16 Correct 1 ms 1920 KB Output is correct
17 Correct 1 ms 1920 KB Output is correct
18 Correct 1 ms 1920 KB Output is correct
19 Correct 1 ms 1920 KB Output is correct
20 Correct 1 ms 1920 KB Output is correct
21 Correct 1 ms 1920 KB Output is correct
22 Correct 1 ms 1920 KB Output is correct
23 Correct 1 ms 1920 KB Output is correct
24 Correct 1 ms 1920 KB Output is correct
25 Correct 1 ms 1920 KB Output is correct
26 Correct 1 ms 1920 KB Output is correct
27 Correct 1 ms 1920 KB Output is correct
28 Correct 1 ms 1920 KB Output is correct
29 Correct 2 ms 1920 KB Output is correct
30 Correct 1 ms 1920 KB Output is correct
31 Correct 2 ms 1920 KB Output is correct
32 Correct 1 ms 1920 KB Output is correct
33 Correct 1 ms 1920 KB Output is correct
34 Correct 1 ms 1920 KB Output is correct
35 Correct 1 ms 1920 KB Output is correct
36 Correct 1 ms 1920 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 1 ms 1920 KB Output is correct
5 Correct 1 ms 1920 KB Output is correct
6 Correct 1 ms 1920 KB Output is correct
7 Correct 1 ms 1920 KB Output is correct
8 Correct 1 ms 1920 KB Output is correct
9 Correct 1 ms 1920 KB Output is correct
10 Correct 1 ms 1920 KB Output is correct
11 Correct 1 ms 1920 KB Output is correct
12 Correct 1 ms 1920 KB Output is correct
13 Correct 1 ms 1920 KB Output is correct
14 Correct 1 ms 1920 KB Output is correct
15 Correct 1 ms 1920 KB Output is correct
16 Correct 1 ms 2048 KB Output is correct
17 Correct 2 ms 2304 KB Output is correct
18 Correct 3 ms 3200 KB Output is correct
19 Correct 3 ms 3328 KB Output is correct
20 Correct 16 ms 15744 KB Output is correct
21 Correct 16 ms 15744 KB Output is correct
22 Correct 155 ms 140048 KB Output is correct
23 Correct 148 ms 140144 KB Output is correct
24 Correct 155 ms 140144 KB Output is correct
25 Correct 150 ms 140144 KB Output is correct
26 Correct 155 ms 141424 KB Output is correct
27 Correct 148 ms 141172 KB Output is correct
28 Correct 157 ms 141424 KB Output is correct
29 Correct 152 ms 141424 KB Output is correct
30 Correct 155 ms 141424 KB Output is correct
31 Correct 153 ms 141424 KB Output is correct
32 Correct 146 ms 141424 KB Output is correct
33 Correct 149 ms 141296 KB Output is correct
34 Correct 155 ms 141424 KB Output is correct
35 Correct 2 ms 1920 KB Output is correct
36 Correct 1 ms 1952 KB Output is correct
37 Correct 151 ms 141396 KB Output is correct
38 Correct 151 ms 141424 KB Output is correct
39 Correct 153 ms 141424 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 2 ms 1920 KB Output is correct
5 Correct 201 ms 139252 KB Output is correct
6 Correct 171 ms 140636 KB Output is correct
7 Correct 197 ms 140492 KB Output is correct
8 Correct 154 ms 141420 KB Output is correct
9 Correct 199 ms 140660 KB Output is correct
10 Correct 192 ms 140532 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 1 ms 1920 KB Output is correct
5 Correct 2 ms 1920 KB Output is correct
6 Correct 1 ms 1920 KB Output is correct
7 Correct 1 ms 1920 KB Output is correct
8 Correct 1 ms 1920 KB Output is correct
9 Correct 1 ms 1920 KB Output is correct
10 Correct 1 ms 1920 KB Output is correct
11 Correct 1 ms 1920 KB Output is correct
12 Correct 1 ms 1920 KB Output is correct
13 Correct 1 ms 1920 KB Output is correct
14 Correct 1 ms 1920 KB Output is correct
15 Correct 1 ms 1920 KB Output is correct
16 Correct 1 ms 1920 KB Output is correct
17 Correct 1 ms 1920 KB Output is correct
18 Correct 1 ms 1920 KB Output is correct
19 Correct 1 ms 1920 KB Output is correct
20 Correct 1 ms 1920 KB Output is correct
21 Correct 1 ms 1920 KB Output is correct
22 Correct 1 ms 1920 KB Output is correct
23 Correct 1 ms 1920 KB Output is correct
24 Correct 1 ms 1920 KB Output is correct
25 Correct 1 ms 1920 KB Output is correct
26 Correct 1 ms 1920 KB Output is correct
27 Correct 1 ms 1920 KB Output is correct
28 Correct 1 ms 1920 KB Output is correct
29 Correct 2 ms 1920 KB Output is correct
30 Correct 1 ms 1920 KB Output is correct
31 Correct 2 ms 1920 KB Output is correct
32 Correct 1 ms 1920 KB Output is correct
33 Correct 1 ms 1920 KB Output is correct
34 Correct 1 ms 1920 KB Output is correct
35 Correct 1 ms 1920 KB Output is correct
36 Correct 1 ms 1920 KB Output is correct
37 Correct 1 ms 1920 KB Output is correct
38 Correct 1 ms 1920 KB Output is correct
39 Correct 2 ms 2048 KB Output is correct
40 Correct 2 ms 2304 KB Output is correct
41 Correct 3 ms 3304 KB Output is correct
42 Correct 3 ms 3200 KB Output is correct
43 Correct 3 ms 3200 KB Output is correct
44 Correct 3 ms 3328 KB Output is correct
45 Correct 3 ms 3200 KB Output is correct
46 Correct 3 ms 3200 KB Output is correct
47 Correct 3 ms 3200 KB Output is correct
48 Correct 3 ms 3200 KB Output is correct
49 Correct 3 ms 3200 KB Output is correct
50 Correct 3 ms 3200 KB Output is correct
51 Correct 3 ms 3328 KB Output is correct
52 Correct 3 ms 3200 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 1 ms 1920 KB Output is correct
5 Correct 2 ms 1920 KB Output is correct
6 Correct 1 ms 1920 KB Output is correct
7 Correct 1 ms 1920 KB Output is correct
8 Correct 1 ms 1920 KB Output is correct
9 Correct 1 ms 1920 KB Output is correct
10 Correct 1 ms 1920 KB Output is correct
11 Correct 1 ms 1920 KB Output is correct
12 Correct 1 ms 1920 KB Output is correct
13 Correct 1 ms 1920 KB Output is correct
14 Correct 1 ms 1920 KB Output is correct
15 Correct 1 ms 1920 KB Output is correct
16 Correct 1 ms 1920 KB Output is correct
17 Correct 1 ms 1920 KB Output is correct
18 Correct 1 ms 1920 KB Output is correct
19 Correct 1 ms 1920 KB Output is correct
20 Correct 1 ms 1920 KB Output is correct
21 Correct 1 ms 1920 KB Output is correct
22 Correct 1 ms 1920 KB Output is correct
23 Correct 1 ms 1920 KB Output is correct
24 Correct 1 ms 1920 KB Output is correct
25 Correct 1 ms 1920 KB Output is correct
26 Correct 1 ms 1920 KB Output is correct
27 Correct 1 ms 1920 KB Output is correct
28 Correct 1 ms 1920 KB Output is correct
29 Correct 2 ms 1920 KB Output is correct
30 Correct 1 ms 1920 KB Output is correct
31 Correct 2 ms 1920 KB Output is correct
32 Correct 1 ms 1920 KB Output is correct
33 Correct 1 ms 1920 KB Output is correct
34 Correct 1 ms 1920 KB Output is correct
35 Correct 1 ms 1920 KB Output is correct
36 Correct 1 ms 1920 KB Output is correct
37 Correct 1 ms 1920 KB Output is correct
38 Correct 1 ms 1920 KB Output is correct
39 Correct 1 ms 1920 KB Output is correct
40 Correct 1 ms 1920 KB Output is correct
41 Correct 1 ms 1920 KB Output is correct
42 Correct 1 ms 1920 KB Output is correct
43 Correct 1 ms 1920 KB Output is correct
44 Correct 1 ms 1920 KB Output is correct
45 Correct 1 ms 1920 KB Output is correct
46 Correct 1 ms 1920 KB Output is correct
47 Correct 1 ms 1920 KB Output is correct
48 Correct 1 ms 1920 KB Output is correct
49 Correct 1 ms 1920 KB Output is correct
50 Correct 1 ms 2048 KB Output is correct
51 Correct 2 ms 2304 KB Output is correct
52 Correct 3 ms 3200 KB Output is correct
53 Correct 3 ms 3328 KB Output is correct
54 Correct 16 ms 15744 KB Output is correct
55 Correct 16 ms 15744 KB Output is correct
56 Correct 155 ms 140048 KB Output is correct
57 Correct 148 ms 140144 KB Output is correct
58 Correct 155 ms 140144 KB Output is correct
59 Correct 150 ms 140144 KB Output is correct
60 Correct 155 ms 141424 KB Output is correct
61 Correct 148 ms 141172 KB Output is correct
62 Correct 157 ms 141424 KB Output is correct
63 Correct 152 ms 141424 KB Output is correct
64 Correct 155 ms 141424 KB Output is correct
65 Correct 153 ms 141424 KB Output is correct
66 Correct 146 ms 141424 KB Output is correct
67 Correct 149 ms 141296 KB Output is correct
68 Correct 155 ms 141424 KB Output is correct
69 Correct 2 ms 1920 KB Output is correct
70 Correct 1 ms 1952 KB Output is correct
71 Correct 151 ms 141396 KB Output is correct
72 Correct 151 ms 141424 KB Output is correct
73 Correct 153 ms 141424 KB Output is correct
74 Correct 1 ms 1920 KB Output is correct
75 Correct 1 ms 1920 KB Output is correct
76 Correct 1 ms 1920 KB Output is correct
77 Correct 2 ms 1920 KB Output is correct
78 Correct 201 ms 139252 KB Output is correct
79 Correct 171 ms 140636 KB Output is correct
80 Correct 197 ms 140492 KB Output is correct
81 Correct 154 ms 141420 KB Output is correct
82 Correct 199 ms 140660 KB Output is correct
83 Correct 192 ms 140532 KB Output is correct
84 Correct 1 ms 1920 KB Output is correct
85 Correct 1 ms 1920 KB Output is correct
86 Correct 2 ms 2048 KB Output is correct
87 Correct 2 ms 2304 KB Output is correct
88 Correct 3 ms 3304 KB Output is correct
89 Correct 3 ms 3200 KB Output is correct
90 Correct 3 ms 3200 KB Output is correct
91 Correct 3 ms 3328 KB Output is correct
92 Correct 3 ms 3200 KB Output is correct
93 Correct 3 ms 3200 KB Output is correct
94 Correct 3 ms 3200 KB Output is correct
95 Correct 3 ms 3200 KB Output is correct
96 Correct 3 ms 3200 KB Output is correct
97 Correct 3 ms 3200 KB Output is correct
98 Correct 3 ms 3328 KB Output is correct
99 Correct 3 ms 3200 KB Output is correct
100 Correct 3 ms 3328 KB Output is correct
101 Correct 18 ms 15820 KB Output is correct
102 Correct 19 ms 15872 KB Output is correct
103 Correct 210 ms 140532 KB Output is correct
104 Correct 208 ms 140532 KB Output is correct
105 Correct 211 ms 140532 KB Output is correct
106 Correct 200 ms 140532 KB Output is correct
107 Correct 183 ms 140564 KB Output is correct
108 Correct 195 ms 140604 KB Output is correct
109 Correct 154 ms 141424 KB Output is correct
110 Correct 152 ms 141424 KB Output is correct
111 Correct 190 ms 140660 KB Output is correct
112 Correct 205 ms 140532 KB Output is correct
113 Correct 181 ms 140532 KB Output is correct
114 Correct 201 ms 140660 KB Output is correct
115 Correct 198 ms 140532 KB Output is correct