oj.uz

Submission #285496

# Submission time Handle Problem Language Result Execution time Memory
285496 2020-08-29T07:26:58 Z MKopchev Arranging Shoes (IOI19_shoes) C++14
100 / 100
 445 ms 26136 KB 
#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;

const int nmax=2e5+42;

int fenwick[nmax];
void update(int pos)
{
    while(pos<nmax)
    {
        fenwick[pos]++;
        pos=pos+(pos&(-pos));
    }
}
int query(int pos)
{
    //cout<<"query "<<pos<<endl;

    int ret=0;
    while(pos)
    {
        ret=ret+fenwick[pos];
        pos=pos-(pos&(-pos));
    }
    return ret;
}

int sum(int le,int ri)
{
    return query(ri)-query(le-1);
}

map<int, vector<int> > seen;

bool paired[nmax];

long long outp;

void my_match(int i,int j)
{
    i++;
    j++;

    //cout<<"my_match "<<i<<" "<<j<<endl;

    int mem_i=i,mem_j=j;

    i=i+sum(i,nmax-1);
    j=j+sum(j,nmax-1);

    outp+=j-i-1;

    //cout<<"i= "<<i<<" j= "<<j<<endl;

    update(mem_i);
    update(mem_j);

    paired[mem_i]=1;
    paired[mem_j]=1;
}
long long count_swaps(std::vector<int> s)
{
    for(int i=s.size()-1;i>=0;i--)
        seen[s[i]].push_back(i);

	for(int i=0;i<s.size();i++)
        if(paired[i+1]==0)
        {
            if(s[i]>0)outp++;

            my_match(seen[s[i]].back(),seen[-s[i]].back());

            seen[s[i]].pop_back();
            seen[-s[i]].pop_back();
        }
    return outp;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:64:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   64 |     for(int i=s.size()-1;i>=0;i--)
      |     ^~~
shoes.cpp:67:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   67 |  for(int i=0;i<s.size();i++)
      |  ^~~
shoes.cpp:67:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |  for(int i=0;i<s.size();i++)
      |              ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 1 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 5 ms 896 KB Output is correct
21 Correct 5 ms 896 KB Output is correct
22 Correct 44 ms 4992 KB Output is correct
23 Correct 48 ms 5104 KB Output is correct
24 Correct 45 ms 5136 KB Output is correct
25 Correct 40 ms 4848 KB Output is correct
26 Correct 49 ms 5100 KB Output is correct
27 Correct 54 ms 4972 KB Output is correct
28 Correct 43 ms 4992 KB Output is correct
29 Correct 44 ms 5104 KB Output is correct
30 Correct 42 ms 4976 KB Output is correct
31 Correct 44 ms 5124 KB Output is correct
32 Correct 41 ms 5104 KB Output is correct
33 Correct 39 ms 4848 KB Output is correct
34 Correct 40 ms 4976 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 0 ms 384 KB Output is correct
37 Correct 43 ms 4976 KB Output is correct
38 Correct 42 ms 5104 KB Output is correct
39 Correct 41 ms 5104 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 348 ms 25976 KB Output is correct
6 Correct 146 ms 7160 KB Output is correct
7 Correct 356 ms 26136 KB Output is correct
8 Correct 49 ms 5044 KB Output is correct
9 Correct 358 ms 26104 KB Output is correct
10 Correct 277 ms 15096 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 0 ms 384 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 2 ms 640 KB Output is correct
42 Correct 2 ms 640 KB Output is correct
43 Correct 2 ms 512 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 2 ms 512 KB Output is correct
46 Correct 2 ms 512 KB Output is correct
47 Correct 2 ms 512 KB Output is correct
48 Correct 4 ms 512 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 2 ms 640 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 416 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 0 ms 384 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 1 ms 384 KB Output is correct
45 Correct 0 ms 384 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 0 ms 384 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 1 ms 384 KB Output is correct
53 Correct 1 ms 384 KB Output is correct
54 Correct 5 ms 896 KB Output is correct
55 Correct 5 ms 896 KB Output is correct
56 Correct 44 ms 4992 KB Output is correct
57 Correct 48 ms 5104 KB Output is correct
58 Correct 45 ms 5136 KB Output is correct
59 Correct 40 ms 4848 KB Output is correct
60 Correct 49 ms 5100 KB Output is correct
61 Correct 54 ms 4972 KB Output is correct
62 Correct 43 ms 4992 KB Output is correct
63 Correct 44 ms 5104 KB Output is correct
64 Correct 42 ms 4976 KB Output is correct
65 Correct 44 ms 5124 KB Output is correct
66 Correct 41 ms 5104 KB Output is correct
67 Correct 39 ms 4848 KB Output is correct
68 Correct 40 ms 4976 KB Output is correct
69 Correct 1 ms 384 KB Output is correct
70 Correct 0 ms 384 KB Output is correct
71 Correct 43 ms 4976 KB Output is correct
72 Correct 42 ms 5104 KB Output is correct
73 Correct 41 ms 5104 KB Output is correct
74 Correct 1 ms 384 KB Output is correct
75 Correct 1 ms 384 KB Output is correct
76 Correct 1 ms 384 KB Output is correct
77 Correct 1 ms 384 KB Output is correct
78 Correct 348 ms 25976 KB Output is correct
79 Correct 146 ms 7160 KB Output is correct
80 Correct 356 ms 26136 KB Output is correct
81 Correct 49 ms 5044 KB Output is correct
82 Correct 358 ms 26104 KB Output is correct
83 Correct 277 ms 15096 KB Output is correct
84 Correct 0 ms 384 KB Output is correct
85 Correct 1 ms 384 KB Output is correct
86 Correct 1 ms 384 KB Output is correct
87 Correct 1 ms 384 KB Output is correct
88 Correct 2 ms 640 KB Output is correct
89 Correct 2 ms 640 KB Output is correct
90 Correct 2 ms 512 KB Output is correct
91 Correct 2 ms 512 KB Output is correct
92 Correct 2 ms 512 KB Output is correct
93 Correct 2 ms 512 KB Output is correct
94 Correct 2 ms 512 KB Output is correct
95 Correct 4 ms 512 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 1 ms 384 KB Output is correct
98 Correct 1 ms 384 KB Output is correct
99 Correct 2 ms 640 KB Output is correct
100 Correct 3 ms 640 KB Output is correct
101 Correct 18 ms 2688 KB Output is correct
102 Correct 13 ms 1152 KB Output is correct
103 Correct 445 ms 25980 KB Output is correct
104 Correct 348 ms 26104 KB Output is correct
105 Correct 353 ms 16632 KB Output is correct
106 Correct 347 ms 25976 KB Output is correct
107 Correct 153 ms 7544 KB Output is correct
108 Correct 180 ms 9592 KB Output is correct
109 Correct 44 ms 5168 KB Output is correct
110 Correct 41 ms 5008 KB Output is correct
111 Correct 345 ms 23544 KB Output is correct
112 Correct 385 ms 21112 KB Output is correct
113 Correct 163 ms 7672 KB Output is correct
114 Correct 350 ms 25976 KB Output is correct
115 Correct 347 ms 25980 KB Output is correct