oj.uz

Submission #409025

# Submission time Handle Problem Language Result Execution time Memory
409025 2021-05-20T05:26:41 Z Gurban Arranging Shoes (IOI19_shoes) C++17
100 / 100
 345 ms 276068 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ss second
#define ff first
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
typedef long double ld;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
const ll inf = 1e18;
const int mod = 1e9+7; //998244353;
const int maxn = 2e5+5;
const int Xg[4] = {1,0,-1,0}, Yg[4] = {0,1,0,-1};
ll modpw(ll a,ll e) {if(e==0)return 1ll;ll x=modpw(a*a%mod,e>>1);return e&1?x*a%mod:x;}

int T[4*maxn];
int go[maxn];
queue<int> cep[maxn],sag[maxn];

void build(int l,int r,int nd){
	if(l==r){T[nd]=1;return;}
	build(l,(l+r)/2,nd*2);
	build((l+r)/2+1,r,nd*2+1);
	T[nd]=T[nd*2]+T[nd*2+1];
}

int tap(int a,int b,int l,int r,int nd){
	if(r < a or l > b) return 0;
	if(l >= a and r <= b) return T[nd];
	return tap(a,b,l,(l+r)/2,nd*2)+tap(a,b,(l+r)/2+1,r,nd*2+1);
}

void upd(int pos,int l,int r,int nd){
	if(l == r){T[nd]=0;return;}
	if(pos <= (l+r)/2) upd(pos,l,(l+r)/2,nd*2);
	else upd(pos,(l+r)/2+1,r,nd*2+1);
	T[nd]=T[nd*2]+T[nd*2+1];
}

ll count_swaps(vector<int> S){
	for(int i = 0;i < sz(S);i++){
		if(S[i] < 0) cep[-S[i]].push(i);
		else sag[S[i]].push(i);
	}
	int n = sz(S);
	build(0,n-1,1);
	ll ans = 0;
	for(int i = 0;i < n;i++){

		if(go[i]) continue;

		// cout<<i<<' ';
		if(S[i] < 0){
			int pos = sag[-S[i]].front();
			sag[-S[i]].pop(); cep[-S[i]].pop();
			ans += tap(i+1,pos-1,0,n-1,1);
			upd(pos,0,n-1,1);
			go[pos]=1;
			// cout<<pos<<'\n';
		} 
		else {
			int pos = cep[S[i]].front();
			cep[S[i]].pop(); sag[S[i]].pop();
			ans += tap(i+1,pos-1,0,n-1,1)+1;
			upd(pos,0,n-1,1);
			go[pos]=1;
			// cout<<pos<<'\n';
		}
	}
	return ans;
}

#ifdef LOCAL
int main(){
	// clock_t TSTART = clock();
	
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n;
	cin >> n;
	n *= 2;
	vi v(n);
	for(int i = 0;i < n;i++) cin >> v[i];
	cout<<count_swaps(v);

	// cout << "\nTime elapsed: " << double(clock()-TSTART) / CLOCKS_PER_SEC << " s.\n";
}
#endif

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 269468 KB Output is correct
2 Correct 199 ms 269540 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 269468 KB Output is correct
2 Correct 199 ms 269540 KB Output is correct
3 Correct 199 ms 269504 KB Output is correct
4 Correct 196 ms 269496 KB Output is correct
5 Correct 205 ms 269464 KB Output is correct
6 Correct 192 ms 269488 KB Output is correct
7 Correct 199 ms 269504 KB Output is correct
8 Correct 191 ms 269540 KB Output is correct
9 Correct 197 ms 269524 KB Output is correct
10 Correct 198 ms 269628 KB Output is correct
11 Correct 190 ms 269508 KB Output is correct
12 Correct 206 ms 269520 KB Output is correct
13 Correct 203 ms 269512 KB Output is correct
14 Correct 193 ms 269508 KB Output is correct
15 Correct 195 ms 269536 KB Output is correct
16 Correct 206 ms 269468 KB Output is correct
17 Correct 192 ms 269544 KB Output is correct
18 Correct 202 ms 269508 KB Output is correct
19 Correct 207 ms 269508 KB Output is correct
20 Correct 188 ms 269532 KB Output is correct
21 Correct 188 ms 269476 KB Output is correct
22 Correct 190 ms 269544 KB Output is correct
23 Correct 193 ms 269492 KB Output is correct
24 Correct 192 ms 269512 KB Output is correct
25 Correct 191 ms 269496 KB Output is correct
26 Correct 189 ms 269544 KB Output is correct
27 Correct 185 ms 269476 KB Output is correct
28 Correct 191 ms 269584 KB Output is correct
29 Correct 195 ms 269508 KB Output is correct
30 Correct 187 ms 269520 KB Output is correct
31 Correct 189 ms 269508 KB Output is correct
32 Correct 192 ms 269528 KB Output is correct
33 Correct 190 ms 269508 KB Output is correct
34 Correct 192 ms 269520 KB Output is correct
35 Correct 191 ms 269548 KB Output is correct
36 Correct 215 ms 269488 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 269468 KB Output is correct
2 Correct 199 ms 269540 KB Output is correct
3 Correct 220 ms 269624 KB Output is correct
4 Correct 192 ms 269488 KB Output is correct
5 Correct 192 ms 269508 KB Output is correct
6 Correct 194 ms 269704 KB Output is correct
7 Correct 190 ms 269508 KB Output is correct
8 Correct 200 ms 269548 KB Output is correct
9 Correct 190 ms 269572 KB Output is correct
10 Correct 193 ms 269548 KB Output is correct
11 Correct 193 ms 269508 KB Output is correct
12 Correct 190 ms 269552 KB Output is correct
13 Correct 192 ms 269540 KB Output is correct
14 Correct 194 ms 269528 KB Output is correct
15 Correct 187 ms 269552 KB Output is correct
16 Correct 214 ms 269580 KB Output is correct
17 Correct 195 ms 269496 KB Output is correct
18 Correct 212 ms 269608 KB Output is correct
19 Correct 193 ms 269708 KB Output is correct
20 Correct 311 ms 270308 KB Output is correct
21 Correct 212 ms 270148 KB Output is correct
22 Correct 276 ms 275980 KB Output is correct
23 Correct 268 ms 275980 KB Output is correct
24 Correct 273 ms 276020 KB Output is correct
25 Correct 282 ms 275388 KB Output is correct
26 Correct 294 ms 276068 KB Output is correct
27 Correct 260 ms 275860 KB Output is correct
28 Correct 267 ms 275600 KB Output is correct
29 Correct 275 ms 275652 KB Output is correct
30 Correct 274 ms 275640 KB Output is correct
31 Correct 270 ms 276036 KB Output is correct
32 Correct 285 ms 275676 KB Output is correct
33 Correct 275 ms 275380 KB Output is correct
34 Correct 275 ms 275684 KB Output is correct
35 Correct 189 ms 269508 KB Output is correct
36 Correct 188 ms 269484 KB Output is correct
37 Correct 282 ms 275652 KB Output is correct
38 Correct 318 ms 275652 KB Output is correct
39 Correct 282 ms 275792 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 193 ms 269548 KB Output is correct
2 Correct 191 ms 269528 KB Output is correct
3 Correct 248 ms 269504 KB Output is correct
4 Correct 195 ms 269508 KB Output is correct
5 Correct 307 ms 274824 KB Output is correct
6 Correct 306 ms 274812 KB Output is correct
7 Correct 299 ms 274728 KB Output is correct
8 Correct 278 ms 275744 KB Output is correct
9 Correct 321 ms 274844 KB Output is correct
10 Correct 299 ms 274832 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 269468 KB Output is correct
2 Correct 199 ms 269540 KB Output is correct
3 Correct 199 ms 269504 KB Output is correct
4 Correct 196 ms 269496 KB Output is correct
5 Correct 205 ms 269464 KB Output is correct
6 Correct 192 ms 269488 KB Output is correct
7 Correct 199 ms 269504 KB Output is correct
8 Correct 191 ms 269540 KB Output is correct
9 Correct 197 ms 269524 KB Output is correct
10 Correct 198 ms 269628 KB Output is correct
11 Correct 190 ms 269508 KB Output is correct
12 Correct 206 ms 269520 KB Output is correct
13 Correct 203 ms 269512 KB Output is correct
14 Correct 193 ms 269508 KB Output is correct
15 Correct 195 ms 269536 KB Output is correct
16 Correct 206 ms 269468 KB Output is correct
17 Correct 192 ms 269544 KB Output is correct
18 Correct 202 ms 269508 KB Output is correct
19 Correct 207 ms 269508 KB Output is correct
20 Correct 188 ms 269532 KB Output is correct
21 Correct 188 ms 269476 KB Output is correct
22 Correct 190 ms 269544 KB Output is correct
23 Correct 193 ms 269492 KB Output is correct
24 Correct 192 ms 269512 KB Output is correct
25 Correct 191 ms 269496 KB Output is correct
26 Correct 189 ms 269544 KB Output is correct
27 Correct 185 ms 269476 KB Output is correct
28 Correct 191 ms 269584 KB Output is correct
29 Correct 195 ms 269508 KB Output is correct
30 Correct 187 ms 269520 KB Output is correct
31 Correct 189 ms 269508 KB Output is correct
32 Correct 192 ms 269528 KB Output is correct
33 Correct 190 ms 269508 KB Output is correct
34 Correct 192 ms 269520 KB Output is correct
35 Correct 191 ms 269548 KB Output is correct
36 Correct 215 ms 269488 KB Output is correct
37 Correct 197 ms 269576 KB Output is correct
38 Correct 200 ms 269508 KB Output is correct
39 Correct 191 ms 269588 KB Output is correct
40 Correct 190 ms 269480 KB Output is correct
41 Correct 227 ms 269640 KB Output is correct
42 Correct 190 ms 269544 KB Output is correct
43 Correct 185 ms 269560 KB Output is correct
44 Correct 209 ms 269724 KB Output is correct
45 Correct 185 ms 269552 KB Output is correct
46 Correct 215 ms 269504 KB Output is correct
47 Correct 208 ms 269532 KB Output is correct
48 Correct 191 ms 269508 KB Output is correct
49 Correct 196 ms 269560 KB Output is correct
50 Correct 187 ms 269640 KB Output is correct
51 Correct 189 ms 269612 KB Output is correct
52 Correct 189 ms 269540 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 269468 KB Output is correct
2 Correct 199 ms 269540 KB Output is correct
3 Correct 199 ms 269504 KB Output is correct
4 Correct 196 ms 269496 KB Output is correct
5 Correct 205 ms 269464 KB Output is correct
6 Correct 192 ms 269488 KB Output is correct
7 Correct 199 ms 269504 KB Output is correct
8 Correct 191 ms 269540 KB Output is correct
9 Correct 197 ms 269524 KB Output is correct
10 Correct 198 ms 269628 KB Output is correct
11 Correct 190 ms 269508 KB Output is correct
12 Correct 206 ms 269520 KB Output is correct
13 Correct 203 ms 269512 KB Output is correct
14 Correct 193 ms 269508 KB Output is correct
15 Correct 195 ms 269536 KB Output is correct
16 Correct 206 ms 269468 KB Output is correct
17 Correct 192 ms 269544 KB Output is correct
18 Correct 202 ms 269508 KB Output is correct
19 Correct 207 ms 269508 KB Output is correct
20 Correct 188 ms 269532 KB Output is correct
21 Correct 188 ms 269476 KB Output is correct
22 Correct 190 ms 269544 KB Output is correct
23 Correct 193 ms 269492 KB Output is correct
24 Correct 192 ms 269512 KB Output is correct
25 Correct 191 ms 269496 KB Output is correct
26 Correct 189 ms 269544 KB Output is correct
27 Correct 185 ms 269476 KB Output is correct
28 Correct 191 ms 269584 KB Output is correct
29 Correct 195 ms 269508 KB Output is correct
30 Correct 187 ms 269520 KB Output is correct
31 Correct 189 ms 269508 KB Output is correct
32 Correct 192 ms 269528 KB Output is correct
33 Correct 190 ms 269508 KB Output is correct
34 Correct 192 ms 269520 KB Output is correct
35 Correct 191 ms 269548 KB Output is correct
36 Correct 215 ms 269488 KB Output is correct
37 Correct 220 ms 269624 KB Output is correct
38 Correct 192 ms 269488 KB Output is correct
39 Correct 192 ms 269508 KB Output is correct
40 Correct 194 ms 269704 KB Output is correct
41 Correct 190 ms 269508 KB Output is correct
42 Correct 200 ms 269548 KB Output is correct
43 Correct 190 ms 269572 KB Output is correct
44 Correct 193 ms 269548 KB Output is correct
45 Correct 193 ms 269508 KB Output is correct
46 Correct 190 ms 269552 KB Output is correct
47 Correct 192 ms 269540 KB Output is correct
48 Correct 194 ms 269528 KB Output is correct
49 Correct 187 ms 269552 KB Output is correct
50 Correct 214 ms 269580 KB Output is correct
51 Correct 195 ms 269496 KB Output is correct
52 Correct 212 ms 269608 KB Output is correct
53 Correct 193 ms 269708 KB Output is correct
54 Correct 311 ms 270308 KB Output is correct
55 Correct 212 ms 270148 KB Output is correct
56 Correct 276 ms 275980 KB Output is correct
57 Correct 268 ms 275980 KB Output is correct
58 Correct 273 ms 276020 KB Output is correct
59 Correct 282 ms 275388 KB Output is correct
60 Correct 294 ms 276068 KB Output is correct
61 Correct 260 ms 275860 KB Output is correct
62 Correct 267 ms 275600 KB Output is correct
63 Correct 275 ms 275652 KB Output is correct
64 Correct 274 ms 275640 KB Output is correct
65 Correct 270 ms 276036 KB Output is correct
66 Correct 285 ms 275676 KB Output is correct
67 Correct 275 ms 275380 KB Output is correct
68 Correct 275 ms 275684 KB Output is correct
69 Correct 189 ms 269508 KB Output is correct
70 Correct 188 ms 269484 KB Output is correct
71 Correct 282 ms 275652 KB Output is correct
72 Correct 318 ms 275652 KB Output is correct
73 Correct 282 ms 275792 KB Output is correct
74 Correct 193 ms 269548 KB Output is correct
75 Correct 191 ms 269528 KB Output is correct
76 Correct 248 ms 269504 KB Output is correct
77 Correct 195 ms 269508 KB Output is correct
78 Correct 307 ms 274824 KB Output is correct
79 Correct 306 ms 274812 KB Output is correct
80 Correct 299 ms 274728 KB Output is correct
81 Correct 278 ms 275744 KB Output is correct
82 Correct 321 ms 274844 KB Output is correct
83 Correct 299 ms 274832 KB Output is correct
84 Correct 197 ms 269576 KB Output is correct
85 Correct 200 ms 269508 KB Output is correct
86 Correct 191 ms 269588 KB Output is correct
87 Correct 190 ms 269480 KB Output is correct
88 Correct 227 ms 269640 KB Output is correct
89 Correct 190 ms 269544 KB Output is correct
90 Correct 185 ms 269560 KB Output is correct
91 Correct 209 ms 269724 KB Output is correct
92 Correct 185 ms 269552 KB Output is correct
93 Correct 215 ms 269504 KB Output is correct
94 Correct 208 ms 269532 KB Output is correct
95 Correct 191 ms 269508 KB Output is correct
96 Correct 196 ms 269560 KB Output is correct
97 Correct 187 ms 269640 KB Output is correct
98 Correct 189 ms 269612 KB Output is correct
99 Correct 189 ms 269540 KB Output is correct
100 Correct 193 ms 269540 KB Output is correct
101 Correct 195 ms 270048 KB Output is correct
102 Correct 208 ms 270064 KB Output is correct
103 Correct 328 ms 275268 KB Output is correct
104 Correct 293 ms 275128 KB Output is correct
105 Correct 311 ms 275208 KB Output is correct
106 Correct 300 ms 274828 KB Output is correct
107 Correct 274 ms 275232 KB Output is correct
108 Correct 287 ms 275140 KB Output is correct
109 Correct 284 ms 275608 KB Output is correct
110 Correct 284 ms 275600 KB Output is correct
111 Correct 292 ms 274904 KB Output is correct
112 Correct 320 ms 275180 KB Output is correct
113 Correct 315 ms 274760 KB Output is correct
114 Correct 309 ms 274808 KB Output is correct
115 Correct 345 ms 274768 KB Output is correct