oj.uz

Submission #143886

# Submission time Handle Problem Language Result Execution time Memory
143886 2019-08-15T12:12:06 Z stoyan_malinin Arranging Shoes (IOI19_shoes) C++14
100 / 100
 561 ms 282360 KB 
#include<iostream>
#include<cstring>
#include<vector>
#include<queue>
#include<set>

using namespace std;

const int MAXN = 2e5 + 5;

struct fenwickTree
{
    int tree[MAXN];

    fenwickTree()
    {
        memset(this->tree, 0, sizeof(this->tree));
    }

    void update(int index, int value)
    {
        index++;
        while(index<MAXN)
        {
            this->tree[index] += value;
            index += index&(-index);
        }
    }

    int query(int index)
    {
        int sum = 0;

        index++;
        while(index>0)
        {
            sum += this->tree[index];
            index -= index&(-index);
        }

        return sum;
    }
};

fenwickTree *T = new fenwickTree();
queue <int> leftShoes[MAXN], rightShoes[MAXN];

int calcValue(int num, int index, int bestLeft, int bestRight)
{
    int sum = (bestLeft - index) + (bestRight - (index+1));
    if(bestLeft>bestRight) sum++;

    return sum;
}

long long count_swaps(vector <int> s)
{
    set <int> allIndexes;
    for(int i = 0;i<s.size();i++)
    {
        allIndexes.insert(i);

        if(s[i]<0) leftShoes[ -s[i] ].push(i);
        else rightShoes[ s[i] ].push(i);
    }

    long long answer = 0;
    for(int index = 0;index<s.size();index+=2)
    {
        int bestIndex = -1;
        int bestLeft, bestRight;

        bestIndex = abs(s[*allIndexes.begin()]);
        allIndexes.erase(leftShoes[bestIndex].front());
        allIndexes.erase(rightShoes[bestIndex].front());

        bestLeft = leftShoes[bestIndex].front() - T->query(leftShoes[bestIndex].front());
        bestRight = rightShoes[bestIndex].front() - T->query(rightShoes[bestIndex].front());

        T->update(leftShoes[bestIndex].front(), 1);
        T->update(rightShoes[bestIndex].front(), 1);

        leftShoes[bestIndex].pop();
        rightShoes[bestIndex].pop();

        //cout << bestLeft << " " << bestRight << '\n';

        answer += calcValue(bestIndex, 0, bestLeft, bestRight);
    }

    //for(int i = 0;i<s.size();i++) cout << s[i] << " ";
    //cout << '\n';

    return answer;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i<s.size();i++)
                   ~^~~~~~~~~
shoes.cpp:68:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int index = 0;index<s.size();index+=2)
                       ~~~~~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 270456 KB Output is correct
2 Correct 274 ms 270564 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 270456 KB Output is correct
2 Correct 274 ms 270564 KB Output is correct
3 Correct 275 ms 270332 KB Output is correct
4 Correct 288 ms 270424 KB Output is correct
5 Correct 273 ms 270504 KB Output is correct
6 Correct 276 ms 270364 KB Output is correct
7 Correct 302 ms 270388 KB Output is correct
8 Correct 273 ms 270356 KB Output is correct
9 Correct 271 ms 270504 KB Output is correct
10 Correct 276 ms 270456 KB Output is correct
11 Correct 313 ms 270584 KB Output is correct
12 Correct 282 ms 270456 KB Output is correct
13 Correct 284 ms 270456 KB Output is correct
14 Correct 274 ms 270456 KB Output is correct
15 Correct 272 ms 270396 KB Output is correct
16 Correct 287 ms 270460 KB Output is correct
17 Correct 277 ms 270460 KB Output is correct
18 Correct 277 ms 270456 KB Output is correct
19 Correct 276 ms 270456 KB Output is correct
20 Correct 274 ms 270356 KB Output is correct
21 Correct 273 ms 270452 KB Output is correct
22 Correct 274 ms 270380 KB Output is correct
23 Correct 272 ms 270328 KB Output is correct
24 Correct 275 ms 270496 KB Output is correct
25 Correct 274 ms 270456 KB Output is correct
26 Correct 274 ms 270436 KB Output is correct
27 Correct 274 ms 270544 KB Output is correct
28 Correct 274 ms 270456 KB Output is correct
29 Correct 275 ms 270456 KB Output is correct
30 Correct 278 ms 270480 KB Output is correct
31 Correct 273 ms 270456 KB Output is correct
32 Correct 282 ms 270556 KB Output is correct
33 Correct 271 ms 270456 KB Output is correct
34 Correct 273 ms 270456 KB Output is correct
35 Correct 277 ms 270444 KB Output is correct
36 Correct 274 ms 270440 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 270456 KB Output is correct
2 Correct 274 ms 270564 KB Output is correct
3 Correct 292 ms 270508 KB Output is correct
4 Correct 303 ms 270312 KB Output is correct
5 Correct 275 ms 270420 KB Output is correct
6 Correct 275 ms 270328 KB Output is correct
7 Correct 278 ms 270456 KB Output is correct
8 Correct 274 ms 270456 KB Output is correct
9 Correct 275 ms 270424 KB Output is correct
10 Correct 274 ms 270400 KB Output is correct
11 Correct 274 ms 270456 KB Output is correct
12 Correct 275 ms 270612 KB Output is correct
13 Correct 273 ms 270392 KB Output is correct
14 Correct 273 ms 270412 KB Output is correct
15 Correct 277 ms 270396 KB Output is correct
16 Correct 307 ms 270456 KB Output is correct
17 Correct 322 ms 270584 KB Output is correct
18 Correct 314 ms 270632 KB Output is correct
19 Correct 315 ms 270584 KB Output is correct
20 Correct 310 ms 271736 KB Output is correct
21 Correct 304 ms 271608 KB Output is correct
22 Correct 393 ms 282332 KB Output is correct
23 Correct 438 ms 282228 KB Output is correct
24 Correct 433 ms 282120 KB Output is correct
25 Correct 438 ms 282360 KB Output is correct
26 Correct 426 ms 282208 KB Output is correct
27 Correct 384 ms 282256 KB Output is correct
28 Correct 387 ms 282204 KB Output is correct
29 Correct 386 ms 282236 KB Output is correct
30 Correct 390 ms 282232 KB Output is correct
31 Correct 403 ms 282280 KB Output is correct
32 Correct 388 ms 282276 KB Output is correct
33 Correct 385 ms 282184 KB Output is correct
34 Correct 393 ms 282328 KB Output is correct
35 Correct 276 ms 270456 KB Output is correct
36 Correct 271 ms 270456 KB Output is correct
37 Correct 384 ms 282232 KB Output is correct
38 Correct 382 ms 282292 KB Output is correct
39 Correct 394 ms 282232 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 277 ms 270468 KB Output is correct
2 Correct 272 ms 270588 KB Output is correct
3 Correct 275 ms 270596 KB Output is correct
4 Correct 273 ms 270360 KB Output is correct
5 Correct 492 ms 281484 KB Output is correct
6 Correct 435 ms 281576 KB Output is correct
7 Correct 464 ms 281464 KB Output is correct
8 Correct 380 ms 282236 KB Output is correct
9 Correct 486 ms 281592 KB Output is correct
10 Correct 458 ms 281420 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 270456 KB Output is correct
2 Correct 274 ms 270564 KB Output is correct
3 Correct 275 ms 270332 KB Output is correct
4 Correct 288 ms 270424 KB Output is correct
5 Correct 273 ms 270504 KB Output is correct
6 Correct 276 ms 270364 KB Output is correct
7 Correct 302 ms 270388 KB Output is correct
8 Correct 273 ms 270356 KB Output is correct
9 Correct 271 ms 270504 KB Output is correct
10 Correct 276 ms 270456 KB Output is correct
11 Correct 313 ms 270584 KB Output is correct
12 Correct 282 ms 270456 KB Output is correct
13 Correct 284 ms 270456 KB Output is correct
14 Correct 274 ms 270456 KB Output is correct
15 Correct 272 ms 270396 KB Output is correct
16 Correct 287 ms 270460 KB Output is correct
17 Correct 277 ms 270460 KB Output is correct
18 Correct 277 ms 270456 KB Output is correct
19 Correct 276 ms 270456 KB Output is correct
20 Correct 274 ms 270356 KB Output is correct
21 Correct 273 ms 270452 KB Output is correct
22 Correct 274 ms 270380 KB Output is correct
23 Correct 272 ms 270328 KB Output is correct
24 Correct 275 ms 270496 KB Output is correct
25 Correct 274 ms 270456 KB Output is correct
26 Correct 274 ms 270436 KB Output is correct
27 Correct 274 ms 270544 KB Output is correct
28 Correct 274 ms 270456 KB Output is correct
29 Correct 275 ms 270456 KB Output is correct
30 Correct 278 ms 270480 KB Output is correct
31 Correct 273 ms 270456 KB Output is correct
32 Correct 282 ms 270556 KB Output is correct
33 Correct 271 ms 270456 KB Output is correct
34 Correct 273 ms 270456 KB Output is correct
35 Correct 277 ms 270444 KB Output is correct
36 Correct 274 ms 270440 KB Output is correct
37 Correct 273 ms 270428 KB Output is correct
38 Correct 277 ms 270584 KB Output is correct
39 Correct 275 ms 270496 KB Output is correct
40 Correct 279 ms 270460 KB Output is correct
41 Correct 279 ms 270512 KB Output is correct
42 Correct 274 ms 270456 KB Output is correct
43 Correct 303 ms 270516 KB Output is correct
44 Correct 278 ms 270464 KB Output is correct
45 Correct 276 ms 270460 KB Output is correct
46 Correct 277 ms 270536 KB Output is correct
47 Correct 273 ms 270456 KB Output is correct
48 Correct 272 ms 270456 KB Output is correct
49 Correct 273 ms 270444 KB Output is correct
50 Correct 298 ms 270456 KB Output is correct
51 Correct 314 ms 270556 KB Output is correct
52 Correct 280 ms 270448 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 289 ms 270456 KB Output is correct
2 Correct 274 ms 270564 KB Output is correct
3 Correct 275 ms 270332 KB Output is correct
4 Correct 288 ms 270424 KB Output is correct
5 Correct 273 ms 270504 KB Output is correct
6 Correct 276 ms 270364 KB Output is correct
7 Correct 302 ms 270388 KB Output is correct
8 Correct 273 ms 270356 KB Output is correct
9 Correct 271 ms 270504 KB Output is correct
10 Correct 276 ms 270456 KB Output is correct
11 Correct 313 ms 270584 KB Output is correct
12 Correct 282 ms 270456 KB Output is correct
13 Correct 284 ms 270456 KB Output is correct
14 Correct 274 ms 270456 KB Output is correct
15 Correct 272 ms 270396 KB Output is correct
16 Correct 287 ms 270460 KB Output is correct
17 Correct 277 ms 270460 KB Output is correct
18 Correct 277 ms 270456 KB Output is correct
19 Correct 276 ms 270456 KB Output is correct
20 Correct 274 ms 270356 KB Output is correct
21 Correct 273 ms 270452 KB Output is correct
22 Correct 274 ms 270380 KB Output is correct
23 Correct 272 ms 270328 KB Output is correct
24 Correct 275 ms 270496 KB Output is correct
25 Correct 274 ms 270456 KB Output is correct
26 Correct 274 ms 270436 KB Output is correct
27 Correct 274 ms 270544 KB Output is correct
28 Correct 274 ms 270456 KB Output is correct
29 Correct 275 ms 270456 KB Output is correct
30 Correct 278 ms 270480 KB Output is correct
31 Correct 273 ms 270456 KB Output is correct
32 Correct 282 ms 270556 KB Output is correct
33 Correct 271 ms 270456 KB Output is correct
34 Correct 273 ms 270456 KB Output is correct
35 Correct 277 ms 270444 KB Output is correct
36 Correct 274 ms 270440 KB Output is correct
37 Correct 292 ms 270508 KB Output is correct
38 Correct 303 ms 270312 KB Output is correct
39 Correct 275 ms 270420 KB Output is correct
40 Correct 275 ms 270328 KB Output is correct
41 Correct 278 ms 270456 KB Output is correct
42 Correct 274 ms 270456 KB Output is correct
43 Correct 275 ms 270424 KB Output is correct
44 Correct 274 ms 270400 KB Output is correct
45 Correct 274 ms 270456 KB Output is correct
46 Correct 275 ms 270612 KB Output is correct
47 Correct 273 ms 270392 KB Output is correct
48 Correct 273 ms 270412 KB Output is correct
49 Correct 277 ms 270396 KB Output is correct
50 Correct 307 ms 270456 KB Output is correct
51 Correct 322 ms 270584 KB Output is correct
52 Correct 314 ms 270632 KB Output is correct
53 Correct 315 ms 270584 KB Output is correct
54 Correct 310 ms 271736 KB Output is correct
55 Correct 304 ms 271608 KB Output is correct
56 Correct 393 ms 282332 KB Output is correct
57 Correct 438 ms 282228 KB Output is correct
58 Correct 433 ms 282120 KB Output is correct
59 Correct 438 ms 282360 KB Output is correct
60 Correct 426 ms 282208 KB Output is correct
61 Correct 384 ms 282256 KB Output is correct
62 Correct 387 ms 282204 KB Output is correct
63 Correct 386 ms 282236 KB Output is correct
64 Correct 390 ms 282232 KB Output is correct
65 Correct 403 ms 282280 KB Output is correct
66 Correct 388 ms 282276 KB Output is correct
67 Correct 385 ms 282184 KB Output is correct
68 Correct 393 ms 282328 KB Output is correct
69 Correct 276 ms 270456 KB Output is correct
70 Correct 271 ms 270456 KB Output is correct
71 Correct 384 ms 282232 KB Output is correct
72 Correct 382 ms 282292 KB Output is correct
73 Correct 394 ms 282232 KB Output is correct
74 Correct 277 ms 270468 KB Output is correct
75 Correct 272 ms 270588 KB Output is correct
76 Correct 275 ms 270596 KB Output is correct
77 Correct 273 ms 270360 KB Output is correct
78 Correct 492 ms 281484 KB Output is correct
79 Correct 435 ms 281576 KB Output is correct
80 Correct 464 ms 281464 KB Output is correct
81 Correct 380 ms 282236 KB Output is correct
82 Correct 486 ms 281592 KB Output is correct
83 Correct 458 ms 281420 KB Output is correct
84 Correct 273 ms 270428 KB Output is correct
85 Correct 277 ms 270584 KB Output is correct
86 Correct 275 ms 270496 KB Output is correct
87 Correct 279 ms 270460 KB Output is correct
88 Correct 279 ms 270512 KB Output is correct
89 Correct 274 ms 270456 KB Output is correct
90 Correct 303 ms 270516 KB Output is correct
91 Correct 278 ms 270464 KB Output is correct
92 Correct 276 ms 270460 KB Output is correct
93 Correct 277 ms 270536 KB Output is correct
94 Correct 273 ms 270456 KB Output is correct
95 Correct 272 ms 270456 KB Output is correct
96 Correct 273 ms 270444 KB Output is correct
97 Correct 298 ms 270456 KB Output is correct
98 Correct 314 ms 270556 KB Output is correct
99 Correct 280 ms 270448 KB Output is correct
100 Correct 276 ms 270644 KB Output is correct
101 Correct 294 ms 271516 KB Output is correct
102 Correct 319 ms 271624 KB Output is correct
103 Correct 561 ms 281504 KB Output is correct
104 Correct 470 ms 281428 KB Output is correct
105 Correct 482 ms 281484 KB Output is correct
106 Correct 470 ms 281408 KB Output is correct
107 Correct 493 ms 281404 KB Output is correct
108 Correct 449 ms 281376 KB Output is correct
109 Correct 388 ms 282192 KB Output is correct
110 Correct 388 ms 282104 KB Output is correct
111 Correct 469 ms 281360 KB Output is correct
112 Correct 507 ms 281384 KB Output is correct
113 Correct 491 ms 281312 KB Output is correct
114 Correct 470 ms 281596 KB Output is correct
115 Correct 463 ms 281336 KB Output is correct