oj.uz

Submission #143885

# Submission time Handle Problem Language Result Execution time Memory
143885 2019-08-15T12:10:50 Z stoyan_malinin Arranging Shoes (IOI19_shoes) C++14
100 / 100
 544 ms 283128 KB 
#include<iostream>
#include<cstring>
#include<vector>
#include<queue>
#include<set>

using namespace std;

const int MAXN = 2e5 + 5;

struct fenwickTree
{
    int tree[MAXN*2];

    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 276 ms 271224 KB Output is correct
2 Correct 276 ms 271272 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 271224 KB Output is correct
2 Correct 276 ms 271272 KB Output is correct
3 Correct 272 ms 271156 KB Output is correct
4 Correct 273 ms 271220 KB Output is correct
5 Correct 280 ms 271208 KB Output is correct
6 Correct 272 ms 271172 KB Output is correct
7 Correct 275 ms 271324 KB Output is correct
8 Correct 320 ms 271196 KB Output is correct
9 Correct 289 ms 271256 KB Output is correct
10 Correct 309 ms 271152 KB Output is correct
11 Correct 278 ms 271196 KB Output is correct
12 Correct 277 ms 271292 KB Output is correct
13 Correct 273 ms 271224 KB Output is correct
14 Correct 275 ms 271224 KB Output is correct
15 Correct 277 ms 271280 KB Output is correct
16 Correct 329 ms 271224 KB Output is correct
17 Correct 278 ms 271120 KB Output is correct
18 Correct 278 ms 271224 KB Output is correct
19 Correct 274 ms 271272 KB Output is correct
20 Correct 273 ms 271244 KB Output is correct
21 Correct 272 ms 271096 KB Output is correct
22 Correct 274 ms 271096 KB Output is correct
23 Correct 275 ms 271184 KB Output is correct
24 Correct 277 ms 271128 KB Output is correct
25 Correct 284 ms 271164 KB Output is correct
26 Correct 276 ms 271296 KB Output is correct
27 Correct 278 ms 271108 KB Output is correct
28 Correct 273 ms 271176 KB Output is correct
29 Correct 274 ms 271196 KB Output is correct
30 Correct 276 ms 271176 KB Output is correct
31 Correct 274 ms 271196 KB Output is correct
32 Correct 276 ms 271224 KB Output is correct
33 Correct 275 ms 271224 KB Output is correct
34 Correct 274 ms 271224 KB Output is correct
35 Correct 276 ms 271224 KB Output is correct
36 Correct 276 ms 271280 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 271224 KB Output is correct
2 Correct 276 ms 271272 KB Output is correct
3 Correct 275 ms 271156 KB Output is correct
4 Correct 273 ms 271224 KB Output is correct
5 Correct 275 ms 271208 KB Output is correct
6 Correct 282 ms 271224 KB Output is correct
7 Correct 281 ms 271224 KB Output is correct
8 Correct 273 ms 271224 KB Output is correct
9 Correct 290 ms 271140 KB Output is correct
10 Correct 273 ms 271228 KB Output is correct
11 Correct 278 ms 271224 KB Output is correct
12 Correct 277 ms 271280 KB Output is correct
13 Correct 272 ms 271196 KB Output is correct
14 Correct 276 ms 271096 KB Output is correct
15 Correct 280 ms 271224 KB Output is correct
16 Correct 274 ms 271224 KB Output is correct
17 Correct 331 ms 271364 KB Output is correct
18 Correct 302 ms 271452 KB Output is correct
19 Correct 303 ms 271352 KB Output is correct
20 Correct 331 ms 272456 KB Output is correct
21 Correct 309 ms 272376 KB Output is correct
22 Correct 413 ms 283128 KB Output is correct
23 Correct 378 ms 283000 KB Output is correct
24 Correct 394 ms 283000 KB Output is correct
25 Correct 417 ms 283000 KB Output is correct
26 Correct 434 ms 282936 KB Output is correct
27 Correct 378 ms 283096 KB Output is correct
28 Correct 401 ms 283000 KB Output is correct
29 Correct 390 ms 283000 KB Output is correct
30 Correct 392 ms 282992 KB Output is correct
31 Correct 393 ms 282972 KB Output is correct
32 Correct 390 ms 283000 KB Output is correct
33 Correct 404 ms 282932 KB Output is correct
34 Correct 387 ms 283004 KB Output is correct
35 Correct 282 ms 271228 KB Output is correct
36 Correct 280 ms 271180 KB Output is correct
37 Correct 412 ms 283000 KB Output is correct
38 Correct 391 ms 282972 KB Output is correct
39 Correct 384 ms 283000 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 284 ms 271108 KB Output is correct
2 Correct 274 ms 271224 KB Output is correct
3 Correct 319 ms 271232 KB Output is correct
4 Correct 274 ms 271152 KB Output is correct
5 Correct 466 ms 282104 KB Output is correct
6 Correct 435 ms 282232 KB Output is correct
7 Correct 512 ms 282232 KB Output is correct
8 Correct 387 ms 283128 KB Output is correct
9 Correct 473 ms 282104 KB Output is correct
10 Correct 466 ms 282104 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 271224 KB Output is correct
2 Correct 276 ms 271272 KB Output is correct
3 Correct 272 ms 271156 KB Output is correct
4 Correct 273 ms 271220 KB Output is correct
5 Correct 280 ms 271208 KB Output is correct
6 Correct 272 ms 271172 KB Output is correct
7 Correct 275 ms 271324 KB Output is correct
8 Correct 320 ms 271196 KB Output is correct
9 Correct 289 ms 271256 KB Output is correct
10 Correct 309 ms 271152 KB Output is correct
11 Correct 278 ms 271196 KB Output is correct
12 Correct 277 ms 271292 KB Output is correct
13 Correct 273 ms 271224 KB Output is correct
14 Correct 275 ms 271224 KB Output is correct
15 Correct 277 ms 271280 KB Output is correct
16 Correct 329 ms 271224 KB Output is correct
17 Correct 278 ms 271120 KB Output is correct
18 Correct 278 ms 271224 KB Output is correct
19 Correct 274 ms 271272 KB Output is correct
20 Correct 273 ms 271244 KB Output is correct
21 Correct 272 ms 271096 KB Output is correct
22 Correct 274 ms 271096 KB Output is correct
23 Correct 275 ms 271184 KB Output is correct
24 Correct 277 ms 271128 KB Output is correct
25 Correct 284 ms 271164 KB Output is correct
26 Correct 276 ms 271296 KB Output is correct
27 Correct 278 ms 271108 KB Output is correct
28 Correct 273 ms 271176 KB Output is correct
29 Correct 274 ms 271196 KB Output is correct
30 Correct 276 ms 271176 KB Output is correct
31 Correct 274 ms 271196 KB Output is correct
32 Correct 276 ms 271224 KB Output is correct
33 Correct 275 ms 271224 KB Output is correct
34 Correct 274 ms 271224 KB Output is correct
35 Correct 276 ms 271224 KB Output is correct
36 Correct 276 ms 271280 KB Output is correct
37 Correct 272 ms 271288 KB Output is correct
38 Correct 274 ms 271312 KB Output is correct
39 Correct 273 ms 271224 KB Output is correct
40 Correct 273 ms 271224 KB Output is correct
41 Correct 276 ms 271216 KB Output is correct
42 Correct 274 ms 271224 KB Output is correct
43 Correct 295 ms 271256 KB Output is correct
44 Correct 307 ms 271348 KB Output is correct
45 Correct 275 ms 271352 KB Output is correct
46 Correct 273 ms 271392 KB Output is correct
47 Correct 278 ms 271324 KB Output is correct
48 Correct 278 ms 271224 KB Output is correct
49 Correct 306 ms 271280 KB Output is correct
50 Correct 304 ms 271380 KB Output is correct
51 Correct 298 ms 271352 KB Output is correct
52 Correct 293 ms 271428 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 271224 KB Output is correct
2 Correct 276 ms 271272 KB Output is correct
3 Correct 272 ms 271156 KB Output is correct
4 Correct 273 ms 271220 KB Output is correct
5 Correct 280 ms 271208 KB Output is correct
6 Correct 272 ms 271172 KB Output is correct
7 Correct 275 ms 271324 KB Output is correct
8 Correct 320 ms 271196 KB Output is correct
9 Correct 289 ms 271256 KB Output is correct
10 Correct 309 ms 271152 KB Output is correct
11 Correct 278 ms 271196 KB Output is correct
12 Correct 277 ms 271292 KB Output is correct
13 Correct 273 ms 271224 KB Output is correct
14 Correct 275 ms 271224 KB Output is correct
15 Correct 277 ms 271280 KB Output is correct
16 Correct 329 ms 271224 KB Output is correct
17 Correct 278 ms 271120 KB Output is correct
18 Correct 278 ms 271224 KB Output is correct
19 Correct 274 ms 271272 KB Output is correct
20 Correct 273 ms 271244 KB Output is correct
21 Correct 272 ms 271096 KB Output is correct
22 Correct 274 ms 271096 KB Output is correct
23 Correct 275 ms 271184 KB Output is correct
24 Correct 277 ms 271128 KB Output is correct
25 Correct 284 ms 271164 KB Output is correct
26 Correct 276 ms 271296 KB Output is correct
27 Correct 278 ms 271108 KB Output is correct
28 Correct 273 ms 271176 KB Output is correct
29 Correct 274 ms 271196 KB Output is correct
30 Correct 276 ms 271176 KB Output is correct
31 Correct 274 ms 271196 KB Output is correct
32 Correct 276 ms 271224 KB Output is correct
33 Correct 275 ms 271224 KB Output is correct
34 Correct 274 ms 271224 KB Output is correct
35 Correct 276 ms 271224 KB Output is correct
36 Correct 276 ms 271280 KB Output is correct
37 Correct 275 ms 271156 KB Output is correct
38 Correct 273 ms 271224 KB Output is correct
39 Correct 275 ms 271208 KB Output is correct
40 Correct 282 ms 271224 KB Output is correct
41 Correct 281 ms 271224 KB Output is correct
42 Correct 273 ms 271224 KB Output is correct
43 Correct 290 ms 271140 KB Output is correct
44 Correct 273 ms 271228 KB Output is correct
45 Correct 278 ms 271224 KB Output is correct
46 Correct 277 ms 271280 KB Output is correct
47 Correct 272 ms 271196 KB Output is correct
48 Correct 276 ms 271096 KB Output is correct
49 Correct 280 ms 271224 KB Output is correct
50 Correct 274 ms 271224 KB Output is correct
51 Correct 331 ms 271364 KB Output is correct
52 Correct 302 ms 271452 KB Output is correct
53 Correct 303 ms 271352 KB Output is correct
54 Correct 331 ms 272456 KB Output is correct
55 Correct 309 ms 272376 KB Output is correct
56 Correct 413 ms 283128 KB Output is correct
57 Correct 378 ms 283000 KB Output is correct
58 Correct 394 ms 283000 KB Output is correct
59 Correct 417 ms 283000 KB Output is correct
60 Correct 434 ms 282936 KB Output is correct
61 Correct 378 ms 283096 KB Output is correct
62 Correct 401 ms 283000 KB Output is correct
63 Correct 390 ms 283000 KB Output is correct
64 Correct 392 ms 282992 KB Output is correct
65 Correct 393 ms 282972 KB Output is correct
66 Correct 390 ms 283000 KB Output is correct
67 Correct 404 ms 282932 KB Output is correct
68 Correct 387 ms 283004 KB Output is correct
69 Correct 282 ms 271228 KB Output is correct
70 Correct 280 ms 271180 KB Output is correct
71 Correct 412 ms 283000 KB Output is correct
72 Correct 391 ms 282972 KB Output is correct
73 Correct 384 ms 283000 KB Output is correct
74 Correct 284 ms 271108 KB Output is correct
75 Correct 274 ms 271224 KB Output is correct
76 Correct 319 ms 271232 KB Output is correct
77 Correct 274 ms 271152 KB Output is correct
78 Correct 466 ms 282104 KB Output is correct
79 Correct 435 ms 282232 KB Output is correct
80 Correct 512 ms 282232 KB Output is correct
81 Correct 387 ms 283128 KB Output is correct
82 Correct 473 ms 282104 KB Output is correct
83 Correct 466 ms 282104 KB Output is correct
84 Correct 272 ms 271288 KB Output is correct
85 Correct 274 ms 271312 KB Output is correct
86 Correct 273 ms 271224 KB Output is correct
87 Correct 273 ms 271224 KB Output is correct
88 Correct 276 ms 271216 KB Output is correct
89 Correct 274 ms 271224 KB Output is correct
90 Correct 295 ms 271256 KB Output is correct
91 Correct 307 ms 271348 KB Output is correct
92 Correct 275 ms 271352 KB Output is correct
93 Correct 273 ms 271392 KB Output is correct
94 Correct 278 ms 271324 KB Output is correct
95 Correct 278 ms 271224 KB Output is correct
96 Correct 306 ms 271280 KB Output is correct
97 Correct 304 ms 271380 KB Output is correct
98 Correct 298 ms 271352 KB Output is correct
99 Correct 293 ms 271428 KB Output is correct
100 Correct 280 ms 271324 KB Output is correct
101 Correct 296 ms 272336 KB Output is correct
102 Correct 290 ms 272380 KB Output is correct
103 Correct 544 ms 282244 KB Output is correct
104 Correct 469 ms 282200 KB Output is correct
105 Correct 523 ms 282184 KB Output is correct
106 Correct 466 ms 282164 KB Output is correct
107 Correct 454 ms 282100 KB Output is correct
108 Correct 457 ms 282104 KB Output is correct
109 Correct 386 ms 283000 KB Output is correct
110 Correct 385 ms 283000 KB Output is correct
111 Correct 466 ms 282232 KB Output is correct
112 Correct 522 ms 282232 KB Output is correct
113 Correct 509 ms 282388 KB Output is correct
114 Correct 496 ms 282360 KB Output is correct
115 Correct 471 ms 282140 KB Output is correct