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Submission #909397

# Submission time Handle Problem Language Result Execution time Memory
909397 2024-01-17T07:46:39 Z Gray Arranging Shoes (IOI19_shoes) C++17
100 / 100
 384 ms 150060 KB 
// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define ln "\n"
const ll INF = 2e18;
const ll MOD = 1e9+7;
using namespace std;

struct Fenwick{
	vector<ll> t;
	ll n;
	Fenwick(ll sz){
		n = sz;
		t.resize(n+1, 0);
	}
	void update(ll i, ll ch){
		for (; i<=n; i+=(-i&i)) t[i]+=ch;
	}
	ll get(ll i){
		ll sum = 0;
		for (; i; i-=(-i&i)) sum+=t[i];
		return sum;
	}
};

long long count_swaps(vector<int> S){
	ll n = S.size()/2;
	Fenwick tr(2*n+1);
	for (ll i=0; i<2*n; i++){
		tr.update(i+1, 1);
	}
	unordered_map<ll, queue<ll>> pt;
	vector<ll> elp(2*n, -1);
	for (ll i=0; i<2*n; i++){
		if (pt[-S[i]].empty()) {
			pt[S[i]].push(i);
		}else{
			ll front = pt[-S[i]].front();
			pt[-S[i]].pop();
			elp[front]=i;
		}
	}
	ll ans = 0;
	for (ll i=0; i<2*n; i++){
		if (elp[i]==-1) continue;
		ll dif = tr.get(elp[i]+1)-tr.get(i+1)-1;
		if (S[i]>0){
			dif++;
		}
		ans+=dif;
		tr.update(elp[i]+1, -1);
		tr.update(i+1, -1);
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 432 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 408 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 4 ms 856 KB Output is correct
21 Correct 4 ms 860 KB Output is correct
22 Correct 34 ms 6204 KB Output is correct
23 Correct 30 ms 6228 KB Output is correct
24 Correct 36 ms 6236 KB Output is correct
25 Correct 36 ms 6992 KB Output is correct
26 Correct 34 ms 6236 KB Output is correct
27 Correct 28 ms 6072 KB Output is correct
28 Correct 34 ms 6996 KB Output is correct
29 Correct 37 ms 7004 KB Output is correct
30 Correct 39 ms 7264 KB Output is correct
31 Correct 36 ms 6232 KB Output is correct
32 Correct 41 ms 7220 KB Output is correct
33 Correct 36 ms 6968 KB Output is correct
34 Correct 36 ms 6992 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 38 ms 7104 KB Output is correct
38 Correct 39 ms 7004 KB Output is correct
39 Correct 40 ms 6992 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 357 ms 150016 KB Output is correct
6 Correct 61 ms 18768 KB Output is correct
7 Correct 344 ms 149896 KB Output is correct
8 Correct 41 ms 7004 KB Output is correct
9 Correct 367 ms 150060 KB Output is correct
10 Correct 185 ms 78180 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 432 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 408 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 432 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 1 ms 604 KB Output is correct
41 Correct 2 ms 1884 KB Output is correct
42 Correct 2 ms 1884 KB Output is correct
43 Correct 1 ms 1628 KB Output is correct
44 Correct 2 ms 1372 KB Output is correct
45 Correct 2 ms 1372 KB Output is correct
46 Correct 2 ms 1112 KB Output is correct
47 Correct 1 ms 860 KB Output is correct
48 Correct 1 ms 860 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 2 ms 1884 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 432 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 408 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 600 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 344 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 1 ms 600 KB Output is correct
54 Correct 4 ms 856 KB Output is correct
55 Correct 4 ms 860 KB Output is correct
56 Correct 34 ms 6204 KB Output is correct
57 Correct 30 ms 6228 KB Output is correct
58 Correct 36 ms 6236 KB Output is correct
59 Correct 36 ms 6992 KB Output is correct
60 Correct 34 ms 6236 KB Output is correct
61 Correct 28 ms 6072 KB Output is correct
62 Correct 34 ms 6996 KB Output is correct
63 Correct 37 ms 7004 KB Output is correct
64 Correct 39 ms 7264 KB Output is correct
65 Correct 36 ms 6232 KB Output is correct
66 Correct 41 ms 7220 KB Output is correct
67 Correct 36 ms 6968 KB Output is correct
68 Correct 36 ms 6992 KB Output is correct
69 Correct 1 ms 344 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 38 ms 7104 KB Output is correct
72 Correct 39 ms 7004 KB Output is correct
73 Correct 40 ms 6992 KB Output is correct
74 Correct 1 ms 348 KB Output is correct
75 Correct 1 ms 504 KB Output is correct
76 Correct 1 ms 348 KB Output is correct
77 Correct 1 ms 348 KB Output is correct
78 Correct 357 ms 150016 KB Output is correct
79 Correct 61 ms 18768 KB Output is correct
80 Correct 344 ms 149896 KB Output is correct
81 Correct 41 ms 7004 KB Output is correct
82 Correct 367 ms 150060 KB Output is correct
83 Correct 185 ms 78180 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 432 KB Output is correct
86 Correct 1 ms 344 KB Output is correct
87 Correct 1 ms 604 KB Output is correct
88 Correct 2 ms 1884 KB Output is correct
89 Correct 2 ms 1884 KB Output is correct
90 Correct 1 ms 1628 KB Output is correct
91 Correct 2 ms 1372 KB Output is correct
92 Correct 2 ms 1372 KB Output is correct
93 Correct 2 ms 1112 KB Output is correct
94 Correct 1 ms 860 KB Output is correct
95 Correct 1 ms 860 KB Output is correct
96 Correct 1 ms 604 KB Output is correct
97 Correct 1 ms 348 KB Output is correct
98 Correct 1 ms 348 KB Output is correct
99 Correct 2 ms 1884 KB Output is correct
100 Correct 2 ms 1884 KB Output is correct
101 Correct 15 ms 13744 KB Output is correct
102 Correct 9 ms 3928 KB Output is correct
103 Correct 384 ms 149880 KB Output is correct
104 Correct 313 ms 149984 KB Output is correct
105 Correct 203 ms 87492 KB Output is correct
106 Correct 346 ms 149900 KB Output is correct
107 Correct 59 ms 22188 KB Output is correct
108 Correct 84 ms 38152 KB Output is correct
109 Correct 36 ms 7232 KB Output is correct
110 Correct 39 ms 7204 KB Output is correct
111 Correct 323 ms 134192 KB Output is correct
112 Correct 260 ms 117192 KB Output is correct
113 Correct 67 ms 23984 KB Output is correct
114 Correct 373 ms 149924 KB Output is correct
115 Correct 351 ms 150020 KB Output is correct