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Submission #204668

# Submission time Handle Problem Language Result Execution time Memory
204668 2020-02-26T14:04:40 Z apostoldaniel854 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 425 ms 409720 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 3e5;

queue <int> d[1 + 2 * N + 5];

typedef long long ll;
int n;
int aib[1 + N * 2];
int used[1 + N * 2];
int lsb (int x) {
    return x & -x;
}

void upd (int x, int y) {
    while (x <= n) {
        aib[x] += y;
        x += lsb (x);
    }
}

int qry (int x) {
    int ans = 0;
    while (x) {
        ans += aib[x];
        x -= lsb (x);
    }
    return ans;
}

ll count_swaps (vector <int> v) {
    n = v.size ();
    for (int i = 0; i < n; i++) {
        d[v[i] + N].push (i);
    }
    for (int i = 0; i < n; i++) {
        upd (i + 1, 1);
    }
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        if (used[i]) continue;
        d[v[i] + N].pop ();
        int j = d[N - v[i]].front();
        d[N - v[i]].pop();
        used[i] = 1;
        used[j] = 1;
        ans += qry (j + 1) - qry (i + 1) - 1;
        upd (i + 1, 1);
        upd (j + 1, -1);
        if (v[i] > v[j])
            ans++;
    }
    return ans;
}

/*int main () {
    ios::sync_with_stdio (false);
    cin.tie (0); cout.tie (0);
    cin >> n;
    vector <int> v (n);
    for (auto &x : v)
        cin >> x;
    cout << count_swaps (v) << "\n";
    return 0;
}*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 404344 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 404344 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct
3 Correct 290 ms 404216 KB Output is correct
4 Correct 293 ms 404220 KB Output is correct
5 Correct 295 ms 404344 KB Output is correct
6 Correct 295 ms 404216 KB Output is correct
7 Correct 301 ms 404172 KB Output is correct
8 Correct 295 ms 404424 KB Output is correct
9 Correct 295 ms 404280 KB Output is correct
10 Correct 304 ms 404216 KB Output is correct
11 Correct 293 ms 404220 KB Output is correct
12 Correct 300 ms 404344 KB Output is correct
13 Correct 289 ms 404216 KB Output is correct
14 Correct 292 ms 404216 KB Output is correct
15 Correct 294 ms 404344 KB Output is correct
16 Correct 297 ms 404216 KB Output is correct
17 Correct 315 ms 404344 KB Output is correct
18 Correct 300 ms 404220 KB Output is correct
19 Correct 295 ms 404216 KB Output is correct
20 Correct 298 ms 404344 KB Output is correct
21 Correct 293 ms 404216 KB Output is correct
22 Correct 297 ms 404216 KB Output is correct
23 Correct 302 ms 404216 KB Output is correct
24 Correct 293 ms 404172 KB Output is correct
25 Correct 305 ms 404220 KB Output is correct
26 Correct 298 ms 404216 KB Output is correct
27 Correct 299 ms 404344 KB Output is correct
28 Correct 304 ms 404216 KB Output is correct
29 Correct 296 ms 404272 KB Output is correct
30 Correct 301 ms 404284 KB Output is correct
31 Correct 305 ms 404216 KB Output is correct
32 Correct 301 ms 404344 KB Output is correct
33 Correct 297 ms 404216 KB Output is correct
34 Correct 311 ms 404216 KB Output is correct
35 Correct 293 ms 404216 KB Output is correct
36 Correct 296 ms 404216 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 404344 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct
3 Correct 301 ms 404192 KB Output is correct
4 Correct 300 ms 404344 KB Output is correct
5 Correct 292 ms 404216 KB Output is correct
6 Correct 292 ms 404220 KB Output is correct
7 Correct 297 ms 404344 KB Output is correct
8 Correct 298 ms 404392 KB Output is correct
9 Correct 299 ms 404284 KB Output is correct
10 Correct 301 ms 404344 KB Output is correct
11 Correct 297 ms 404216 KB Output is correct
12 Correct 306 ms 404236 KB Output is correct
13 Correct 295 ms 404216 KB Output is correct
14 Correct 295 ms 404344 KB Output is correct
15 Correct 301 ms 404344 KB Output is correct
16 Correct 293 ms 404216 KB Output is correct
17 Correct 305 ms 404216 KB Output is correct
18 Correct 321 ms 404304 KB Output is correct
19 Correct 312 ms 404344 KB Output is correct
20 Correct 318 ms 404600 KB Output is correct
21 Correct 311 ms 404728 KB Output is correct
22 Correct 356 ms 408312 KB Output is correct
23 Correct 350 ms 408184 KB Output is correct
24 Correct 368 ms 408312 KB Output is correct
25 Correct 356 ms 408184 KB Output is correct
26 Correct 356 ms 409472 KB Output is correct
27 Correct 348 ms 409232 KB Output is correct
28 Correct 354 ms 409464 KB Output is correct
29 Correct 350 ms 409592 KB Output is correct
30 Correct 349 ms 409464 KB Output is correct
31 Correct 354 ms 409720 KB Output is correct
32 Correct 353 ms 409592 KB Output is correct
33 Correct 350 ms 409336 KB Output is correct
34 Correct 364 ms 409592 KB Output is correct
35 Correct 297 ms 404216 KB Output is correct
36 Correct 303 ms 404344 KB Output is correct
37 Correct 355 ms 409464 KB Output is correct
38 Correct 351 ms 409464 KB Output is correct
39 Correct 347 ms 409464 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 404216 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct
3 Correct 293 ms 404216 KB Output is correct
4 Correct 295 ms 404216 KB Output is correct
5 Correct 388 ms 407416 KB Output is correct
6 Correct 364 ms 408696 KB Output is correct
7 Correct 391 ms 408568 KB Output is correct
8 Correct 358 ms 409464 KB Output is correct
9 Correct 392 ms 408700 KB Output is correct
10 Correct 384 ms 408696 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 404344 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct
3 Correct 290 ms 404216 KB Output is correct
4 Correct 293 ms 404220 KB Output is correct
5 Correct 295 ms 404344 KB Output is correct
6 Correct 295 ms 404216 KB Output is correct
7 Correct 301 ms 404172 KB Output is correct
8 Correct 295 ms 404424 KB Output is correct
9 Correct 295 ms 404280 KB Output is correct
10 Correct 304 ms 404216 KB Output is correct
11 Correct 293 ms 404220 KB Output is correct
12 Correct 300 ms 404344 KB Output is correct
13 Correct 289 ms 404216 KB Output is correct
14 Correct 292 ms 404216 KB Output is correct
15 Correct 294 ms 404344 KB Output is correct
16 Correct 297 ms 404216 KB Output is correct
17 Correct 315 ms 404344 KB Output is correct
18 Correct 300 ms 404220 KB Output is correct
19 Correct 295 ms 404216 KB Output is correct
20 Correct 298 ms 404344 KB Output is correct
21 Correct 293 ms 404216 KB Output is correct
22 Correct 297 ms 404216 KB Output is correct
23 Correct 302 ms 404216 KB Output is correct
24 Correct 293 ms 404172 KB Output is correct
25 Correct 305 ms 404220 KB Output is correct
26 Correct 298 ms 404216 KB Output is correct
27 Correct 299 ms 404344 KB Output is correct
28 Correct 304 ms 404216 KB Output is correct
29 Correct 296 ms 404272 KB Output is correct
30 Correct 301 ms 404284 KB Output is correct
31 Correct 305 ms 404216 KB Output is correct
32 Correct 301 ms 404344 KB Output is correct
33 Correct 297 ms 404216 KB Output is correct
34 Correct 311 ms 404216 KB Output is correct
35 Correct 293 ms 404216 KB Output is correct
36 Correct 296 ms 404216 KB Output is correct
37 Correct 293 ms 404216 KB Output is correct
38 Correct 301 ms 404216 KB Output is correct
39 Correct 288 ms 404216 KB Output is correct
40 Correct 295 ms 404216 KB Output is correct
41 Correct 296 ms 404216 KB Output is correct
42 Correct 297 ms 404216 KB Output is correct
43 Correct 293 ms 404340 KB Output is correct
44 Correct 293 ms 404344 KB Output is correct
45 Correct 300 ms 404216 KB Output is correct
46 Correct 304 ms 404344 KB Output is correct
47 Correct 296 ms 404216 KB Output is correct
48 Correct 301 ms 404472 KB Output is correct
49 Correct 297 ms 404216 KB Output is correct
50 Correct 317 ms 404348 KB Output is correct
51 Correct 304 ms 404344 KB Output is correct
52 Correct 297 ms 404344 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 404344 KB Output is correct
2 Correct 297 ms 404216 KB Output is correct
3 Correct 290 ms 404216 KB Output is correct
4 Correct 293 ms 404220 KB Output is correct
5 Correct 295 ms 404344 KB Output is correct
6 Correct 295 ms 404216 KB Output is correct
7 Correct 301 ms 404172 KB Output is correct
8 Correct 295 ms 404424 KB Output is correct
9 Correct 295 ms 404280 KB Output is correct
10 Correct 304 ms 404216 KB Output is correct
11 Correct 293 ms 404220 KB Output is correct
12 Correct 300 ms 404344 KB Output is correct
13 Correct 289 ms 404216 KB Output is correct
14 Correct 292 ms 404216 KB Output is correct
15 Correct 294 ms 404344 KB Output is correct
16 Correct 297 ms 404216 KB Output is correct
17 Correct 315 ms 404344 KB Output is correct
18 Correct 300 ms 404220 KB Output is correct
19 Correct 295 ms 404216 KB Output is correct
20 Correct 298 ms 404344 KB Output is correct
21 Correct 293 ms 404216 KB Output is correct
22 Correct 297 ms 404216 KB Output is correct
23 Correct 302 ms 404216 KB Output is correct
24 Correct 293 ms 404172 KB Output is correct
25 Correct 305 ms 404220 KB Output is correct
26 Correct 298 ms 404216 KB Output is correct
27 Correct 299 ms 404344 KB Output is correct
28 Correct 304 ms 404216 KB Output is correct
29 Correct 296 ms 404272 KB Output is correct
30 Correct 301 ms 404284 KB Output is correct
31 Correct 305 ms 404216 KB Output is correct
32 Correct 301 ms 404344 KB Output is correct
33 Correct 297 ms 404216 KB Output is correct
34 Correct 311 ms 404216 KB Output is correct
35 Correct 293 ms 404216 KB Output is correct
36 Correct 296 ms 404216 KB Output is correct
37 Correct 301 ms 404192 KB Output is correct
38 Correct 300 ms 404344 KB Output is correct
39 Correct 292 ms 404216 KB Output is correct
40 Correct 292 ms 404220 KB Output is correct
41 Correct 297 ms 404344 KB Output is correct
42 Correct 298 ms 404392 KB Output is correct
43 Correct 299 ms 404284 KB Output is correct
44 Correct 301 ms 404344 KB Output is correct
45 Correct 297 ms 404216 KB Output is correct
46 Correct 306 ms 404236 KB Output is correct
47 Correct 295 ms 404216 KB Output is correct
48 Correct 295 ms 404344 KB Output is correct
49 Correct 301 ms 404344 KB Output is correct
50 Correct 293 ms 404216 KB Output is correct
51 Correct 305 ms 404216 KB Output is correct
52 Correct 321 ms 404304 KB Output is correct
53 Correct 312 ms 404344 KB Output is correct
54 Correct 318 ms 404600 KB Output is correct
55 Correct 311 ms 404728 KB Output is correct
56 Correct 356 ms 408312 KB Output is correct
57 Correct 350 ms 408184 KB Output is correct
58 Correct 368 ms 408312 KB Output is correct
59 Correct 356 ms 408184 KB Output is correct
60 Correct 356 ms 409472 KB Output is correct
61 Correct 348 ms 409232 KB Output is correct
62 Correct 354 ms 409464 KB Output is correct
63 Correct 350 ms 409592 KB Output is correct
64 Correct 349 ms 409464 KB Output is correct
65 Correct 354 ms 409720 KB Output is correct
66 Correct 353 ms 409592 KB Output is correct
67 Correct 350 ms 409336 KB Output is correct
68 Correct 364 ms 409592 KB Output is correct
69 Correct 297 ms 404216 KB Output is correct
70 Correct 303 ms 404344 KB Output is correct
71 Correct 355 ms 409464 KB Output is correct
72 Correct 351 ms 409464 KB Output is correct
73 Correct 347 ms 409464 KB Output is correct
74 Correct 294 ms 404216 KB Output is correct
75 Correct 297 ms 404216 KB Output is correct
76 Correct 293 ms 404216 KB Output is correct
77 Correct 295 ms 404216 KB Output is correct
78 Correct 388 ms 407416 KB Output is correct
79 Correct 364 ms 408696 KB Output is correct
80 Correct 391 ms 408568 KB Output is correct
81 Correct 358 ms 409464 KB Output is correct
82 Correct 392 ms 408700 KB Output is correct
83 Correct 384 ms 408696 KB Output is correct
84 Correct 293 ms 404216 KB Output is correct
85 Correct 301 ms 404216 KB Output is correct
86 Correct 288 ms 404216 KB Output is correct
87 Correct 295 ms 404216 KB Output is correct
88 Correct 296 ms 404216 KB Output is correct
89 Correct 297 ms 404216 KB Output is correct
90 Correct 293 ms 404340 KB Output is correct
91 Correct 293 ms 404344 KB Output is correct
92 Correct 300 ms 404216 KB Output is correct
93 Correct 304 ms 404344 KB Output is correct
94 Correct 296 ms 404216 KB Output is correct
95 Correct 301 ms 404472 KB Output is correct
96 Correct 297 ms 404216 KB Output is correct
97 Correct 317 ms 404348 KB Output is correct
98 Correct 304 ms 404344 KB Output is correct
99 Correct 297 ms 404344 KB Output is correct
100 Correct 296 ms 404320 KB Output is correct
101 Correct 307 ms 404600 KB Output is correct
102 Correct 298 ms 404748 KB Output is correct
103 Correct 425 ms 408696 KB Output is correct
104 Correct 410 ms 408656 KB Output is correct
105 Correct 399 ms 408696 KB Output is correct
106 Correct 398 ms 408764 KB Output is correct
107 Correct 373 ms 408696 KB Output is correct
108 Correct 377 ms 408568 KB Output is correct
109 Correct 362 ms 409464 KB Output is correct
110 Correct 347 ms 409592 KB Output is correct
111 Correct 396 ms 408760 KB Output is correct
112 Correct 412 ms 408568 KB Output is correct
113 Correct 390 ms 408696 KB Output is correct
114 Correct 395 ms 408592 KB Output is correct
115 Correct 394 ms 408568 KB Output is correct