oj.uz

Submission #255949

# Submission time Handle Problem Language Result Execution time Memory
255949 2020-08-02T06:51:55 Z b00n0rp Arranging Shoes (IOI19_shoes) C++17
100 / 100
 111 ms 22136 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define vi vector<int>
#define pb push_back
#define REP(i,n) for(int i = 0; i < n; i++)
#define FOR(i,a,b) for(int i = a; i < b; i++)

int n;
vi a;

ll ans = 0;

bool paired(int ind){
	if(ind >= 2*n-1 or ind < 0) return 0;
	return (a[ind]+a[ind+1] == 0 and a[ind] < a[ind+1]);
}

int last[200005];
bool exis[200005];

vi gg1[200005],gg2[200005];
int seg[400005];

void upd(int ind,int val){
	ind += 2*n;
	while(ind){
		seg[ind] += val;
		ind /= 2;
	}
}

int quer(int l,int r){
	l += 2*n;
	r += 2*n+1;
	int res = 0;
	while(l < r){
		if(l%2) res += seg[l++];
		if(r%2) res += seg[--r];
		l /= 2;
		r /= 2;
	}
	return res;
}

ll count_swaps(vector<int> s) {
	n = s.size()/2;
	a = s;
	REP(i,2*n){
		if(a[i] < 0) gg1[-a[i]].pb(i);
		else gg2[a[i]].pb(i);
	}
	int cur = 1;
	FOR(i,1,n+1){
		REP(j,(int)gg1[i].size()){
			a[gg1[i][j]] = -cur;
			a[gg2[i][j]] = cur;
			cur++;
		}
	}
	REP(i,2*n){
		if(exis[n-a[i]]){
			ans += i-last[n-a[i]]-1;
			if(a[i] < 0) ans++;
			ans -= quer(0,last[n-a[i]]);
			upd(last[n-a[i]],1);
			upd(i,-1);
			exis[n+a[i]] = 0;
			exis[n-a[i]] = 0; 
		}
		else{
			exis[n+a[i]] = 1;
			last[n+a[i]] = i;
		}
		// cout << i << " " << ans << endl;
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 7 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 6 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 6 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 6 ms 9728 KB Output is correct
15 Correct 6 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 6 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9600 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 6 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 6 ms 9728 KB Output is correct
31 Correct 6 ms 9728 KB Output is correct
32 Correct 6 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 6 ms 9728 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 8 ms 9728 KB Output is correct
4 Correct 8 ms 9728 KB Output is correct
5 Correct 6 ms 9728 KB Output is correct
6 Correct 8 ms 9728 KB Output is correct
7 Correct 6 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 8 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 6 ms 9728 KB Output is correct
15 Correct 6 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 6 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 11 ms 10368 KB Output is correct
21 Correct 11 ms 10368 KB Output is correct
22 Correct 52 ms 15256 KB Output is correct
23 Correct 50 ms 16492 KB Output is correct
24 Correct 53 ms 16876 KB Output is correct
25 Correct 47 ms 16240 KB Output is correct
26 Correct 53 ms 16492 KB Output is correct
27 Correct 51 ms 16364 KB Output is correct
28 Correct 52 ms 16368 KB Output is correct
29 Correct 48 ms 16368 KB Output is correct
30 Correct 49 ms 16380 KB Output is correct
31 Correct 52 ms 16516 KB Output is correct
32 Correct 49 ms 16424 KB Output is correct
33 Correct 47 ms 16240 KB Output is correct
34 Correct 49 ms 16428 KB Output is correct
35 Correct 6 ms 9764 KB Output is correct
36 Correct 6 ms 9728 KB Output is correct
37 Correct 50 ms 16424 KB Output is correct
38 Correct 51 ms 16368 KB Output is correct
39 Correct 49 ms 16368 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 86 ms 20472 KB Output is correct
6 Correct 65 ms 16760 KB Output is correct
7 Correct 85 ms 21496 KB Output is correct
8 Correct 51 ms 16132 KB Output is correct
9 Correct 85 ms 21476 KB Output is correct
10 Correct 77 ms 18424 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 7 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 6 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 6 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 6 ms 9728 KB Output is correct
15 Correct 6 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 6 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9600 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 6 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 6 ms 9728 KB Output is correct
31 Correct 6 ms 9728 KB Output is correct
32 Correct 6 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 6 ms 9728 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct
37 Correct 6 ms 9728 KB Output is correct
38 Correct 6 ms 9728 KB Output is correct
39 Correct 6 ms 9728 KB Output is correct
40 Correct 6 ms 9728 KB Output is correct
41 Correct 7 ms 9856 KB Output is correct
42 Correct 7 ms 9856 KB Output is correct
43 Correct 7 ms 9856 KB Output is correct
44 Correct 6 ms 9864 KB Output is correct
45 Correct 6 ms 9856 KB Output is correct
46 Correct 6 ms 9728 KB Output is correct
47 Correct 8 ms 9728 KB Output is correct
48 Correct 6 ms 9728 KB Output is correct
49 Correct 7 ms 9728 KB Output is correct
50 Correct 9 ms 9728 KB Output is correct
51 Correct 6 ms 9728 KB Output is correct
52 Correct 6 ms 9856 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 6 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 7 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 6 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 6 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 6 ms 9728 KB Output is correct
15 Correct 6 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 6 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9600 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 6 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 6 ms 9728 KB Output is correct
31 Correct 6 ms 9728 KB Output is correct
32 Correct 6 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 6 ms 9728 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct
37 Correct 8 ms 9728 KB Output is correct
38 Correct 8 ms 9728 KB Output is correct
39 Correct 6 ms 9728 KB Output is correct
40 Correct 8 ms 9728 KB Output is correct
41 Correct 6 ms 9728 KB Output is correct
42 Correct 6 ms 9728 KB Output is correct
43 Correct 6 ms 9728 KB Output is correct
44 Correct 8 ms 9728 KB Output is correct
45 Correct 6 ms 9728 KB Output is correct
46 Correct 8 ms 9728 KB Output is correct
47 Correct 6 ms 9728 KB Output is correct
48 Correct 6 ms 9728 KB Output is correct
49 Correct 6 ms 9728 KB Output is correct
50 Correct 6 ms 9728 KB Output is correct
51 Correct 6 ms 9728 KB Output is correct
52 Correct 6 ms 9728 KB Output is correct
53 Correct 6 ms 9728 KB Output is correct
54 Correct 11 ms 10368 KB Output is correct
55 Correct 11 ms 10368 KB Output is correct
56 Correct 52 ms 15256 KB Output is correct
57 Correct 50 ms 16492 KB Output is correct
58 Correct 53 ms 16876 KB Output is correct
59 Correct 47 ms 16240 KB Output is correct
60 Correct 53 ms 16492 KB Output is correct
61 Correct 51 ms 16364 KB Output is correct
62 Correct 52 ms 16368 KB Output is correct
63 Correct 48 ms 16368 KB Output is correct
64 Correct 49 ms 16380 KB Output is correct
65 Correct 52 ms 16516 KB Output is correct
66 Correct 49 ms 16424 KB Output is correct
67 Correct 47 ms 16240 KB Output is correct
68 Correct 49 ms 16428 KB Output is correct
69 Correct 6 ms 9764 KB Output is correct
70 Correct 6 ms 9728 KB Output is correct
71 Correct 50 ms 16424 KB Output is correct
72 Correct 51 ms 16368 KB Output is correct
73 Correct 49 ms 16368 KB Output is correct
74 Correct 6 ms 9728 KB Output is correct
75 Correct 6 ms 9728 KB Output is correct
76 Correct 6 ms 9728 KB Output is correct
77 Correct 6 ms 9728 KB Output is correct
78 Correct 86 ms 20472 KB Output is correct
79 Correct 65 ms 16760 KB Output is correct
80 Correct 85 ms 21496 KB Output is correct
81 Correct 51 ms 16132 KB Output is correct
82 Correct 85 ms 21476 KB Output is correct
83 Correct 77 ms 18424 KB Output is correct
84 Correct 6 ms 9728 KB Output is correct
85 Correct 6 ms 9728 KB Output is correct
86 Correct 6 ms 9728 KB Output is correct
87 Correct 6 ms 9728 KB Output is correct
88 Correct 7 ms 9856 KB Output is correct
89 Correct 7 ms 9856 KB Output is correct
90 Correct 7 ms 9856 KB Output is correct
91 Correct 6 ms 9864 KB Output is correct
92 Correct 6 ms 9856 KB Output is correct
93 Correct 6 ms 9728 KB Output is correct
94 Correct 8 ms 9728 KB Output is correct
95 Correct 6 ms 9728 KB Output is correct
96 Correct 7 ms 9728 KB Output is correct
97 Correct 9 ms 9728 KB Output is correct
98 Correct 6 ms 9728 KB Output is correct
99 Correct 6 ms 9856 KB Output is correct
100 Correct 7 ms 9856 KB Output is correct
101 Correct 13 ms 10880 KB Output is correct
102 Correct 12 ms 10496 KB Output is correct
103 Correct 111 ms 22136 KB Output is correct
104 Correct 109 ms 21752 KB Output is correct
105 Correct 98 ms 19424 KB Output is correct
106 Correct 84 ms 21752 KB Output is correct
107 Correct 79 ms 17072 KB Output is correct
108 Correct 75 ms 17400 KB Output is correct
109 Correct 49 ms 16752 KB Output is correct
110 Correct 49 ms 16496 KB Output is correct
111 Correct 85 ms 20984 KB Output is correct
112 Correct 97 ms 20728 KB Output is correct
113 Correct 74 ms 17016 KB Output is correct
114 Correct 88 ms 21752 KB Output is correct
115 Correct 94 ms 21708 KB Output is correct