답안 #280097

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
280097	2020-08-22T13:30:04 Z	ec1117	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	87 ms	18000 KB

shoes

/**
 * Description: range sum queries and point updates for $D$ dimensions
 * Source: https://codeforces.com/blog/entry/64914
 * Verification: SPOJ matsum
 * Usage: \texttt{BIT<int,10,10>} gives 2D BIT
 * Time: O((\log N)^D)
 */


#include "bits/stdc++.h"
#include "shoes.h"
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pi;

#define pb push_back
#define mp make_pair
#define sz(v) ((int)(v).size())

const int MAXN=100001;

struct bit{
    int tree[MAXN];
    void add(int x, int v){
        for(int i=x; i<MAXN; i+=i&-i) tree[i] += v;
    }
    int query(int x){
        int ret = 0;
        for(int i=x; i; i-=i&-i) ret += tree[i];
        return ret;
    }
}bit;


vector<pi> order[MAXN];
vector<pi> calc;
ll count_swaps(vector<int> s){
    int n = sz(s) / 2;
    ll ret=0;
    for(int i=0;i<sz(s);i++)
        order[abs(s[i])].push_back(mp(s[i],i));
    for(int i=1;i<=MAXN;i++){
        sort(order[i].begin(), order[i].end());
        for(int j=0;j<order[i].size()/2;j++){
            int l = order[i][j].second;
            int r = order[i][j + sz(order[i])/2].second;
            if(l>r) {
                ret++;
                swap(l,r);
            }
            calc.push_back(mp(l+1,r+1));
        }
    }
    for(int i=1; i<=2*n; i++) bit.add(i, 1);
    sort(calc.begin(),calc.end());
    for(pi x:calc){
        ret += bit.query(x.second - 1) - bit.query(x.first);
        bit.add(x.second,-1);
        bit.add(x.first,-1);
    }
    return ret;
}

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:46:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for(int j=0;j<order[i].size()/2;j++){
      |                     ~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	2 ms	2688 KB	Output is correct
4	Correct	2 ms	2664 KB	Output is correct
5	Correct	2 ms	2688 KB	Output is correct
6	Correct	2 ms	2688 KB	Output is correct
7	Correct	3 ms	2688 KB	Output is correct
8	Correct	2 ms	2688 KB	Output is correct
9	Correct	3 ms	2688 KB	Output is correct
10	Correct	2 ms	2688 KB	Output is correct
11	Correct	3 ms	2688 KB	Output is correct
12	Correct	3 ms	2688 KB	Output is correct
13	Correct	2 ms	2688 KB	Output is correct
14	Correct	2 ms	2688 KB	Output is correct
15	Correct	2 ms	2688 KB	Output is correct
16	Correct	3 ms	2688 KB	Output is correct
17	Correct	2 ms	2688 KB	Output is correct
18	Correct	2 ms	2688 KB	Output is correct
19	Correct	3 ms	2688 KB	Output is correct
20	Correct	2 ms	2688 KB	Output is correct
21	Correct	2 ms	2688 KB	Output is correct
22	Correct	2 ms	2688 KB	Output is correct
23	Correct	3 ms	2688 KB	Output is correct
24	Correct	3 ms	2688 KB	Output is correct
25	Correct	2 ms	2688 KB	Output is correct
26	Correct	2 ms	2688 KB	Output is correct
27	Correct	2 ms	2688 KB	Output is correct
28	Correct	2 ms	2688 KB	Output is correct
29	Correct	2 ms	2688 KB	Output is correct
30	Correct	2 ms	2688 KB	Output is correct
31	Correct	3 ms	2688 KB	Output is correct
32	Correct	2 ms	2688 KB	Output is correct
33	Correct	2 ms	2688 KB	Output is correct
34	Correct	2 ms	2688 KB	Output is correct
35	Correct	2 ms	2688 KB	Output is correct
36	Correct	3 ms	2688 KB	Output is correct

Subtask #3
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	2 ms	2688 KB	Output is correct
4	Correct	2 ms	2688 KB	Output is correct
5	Correct	2 ms	2688 KB	Output is correct
6	Correct	2 ms	2688 KB	Output is correct
7	Correct	3 ms	2688 KB	Output is correct
8	Correct	4 ms	2688 KB	Output is correct
9	Correct	2 ms	2688 KB	Output is correct
10	Correct	2 ms	2688 KB	Output is correct
11	Correct	3 ms	2720 KB	Output is correct
12	Correct	2 ms	2688 KB	Output is correct
13	Correct	2 ms	2688 KB	Output is correct
14	Correct	2 ms	2688 KB	Output is correct
15	Correct	2 ms	2688 KB	Output is correct
16	Correct	2 ms	2688 KB	Output is correct
17	Correct	2 ms	2688 KB	Output is correct
18	Correct	3 ms	2688 KB	Output is correct
19	Correct	3 ms	2688 KB	Output is correct
20	Correct	12 ms	3452 KB	Output is correct
21	Correct	9 ms	3452 KB	Output is correct
22	Runtime error	68 ms	16616 KB	Execution killed with signal 11
23	Halted	0 ms	0 KB	-

Subtask #4
0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	3 ms	2688 KB	Output is correct
4	Correct	2 ms	2688 KB	Output is correct
5	Runtime error	87 ms	18000 KB	Execution killed with signal 11
6	Halted	0 ms	0 KB	-

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	2 ms	2688 KB	Output is correct
4	Correct	2 ms	2664 KB	Output is correct
5	Correct	2 ms	2688 KB	Output is correct
6	Correct	2 ms	2688 KB	Output is correct
7	Correct	3 ms	2688 KB	Output is correct
8	Correct	2 ms	2688 KB	Output is correct
9	Correct	3 ms	2688 KB	Output is correct
10	Correct	2 ms	2688 KB	Output is correct
11	Correct	3 ms	2688 KB	Output is correct
12	Correct	3 ms	2688 KB	Output is correct
13	Correct	2 ms	2688 KB	Output is correct
14	Correct	2 ms	2688 KB	Output is correct
15	Correct	2 ms	2688 KB	Output is correct
16	Correct	3 ms	2688 KB	Output is correct
17	Correct	2 ms	2688 KB	Output is correct
18	Correct	2 ms	2688 KB	Output is correct
19	Correct	3 ms	2688 KB	Output is correct
20	Correct	2 ms	2688 KB	Output is correct
21	Correct	2 ms	2688 KB	Output is correct
22	Correct	2 ms	2688 KB	Output is correct
23	Correct	3 ms	2688 KB	Output is correct
24	Correct	3 ms	2688 KB	Output is correct
25	Correct	2 ms	2688 KB	Output is correct
26	Correct	2 ms	2688 KB	Output is correct
27	Correct	2 ms	2688 KB	Output is correct
28	Correct	2 ms	2688 KB	Output is correct
29	Correct	2 ms	2688 KB	Output is correct
30	Correct	2 ms	2688 KB	Output is correct
31	Correct	3 ms	2688 KB	Output is correct
32	Correct	2 ms	2688 KB	Output is correct
33	Correct	2 ms	2688 KB	Output is correct
34	Correct	2 ms	2688 KB	Output is correct
35	Correct	2 ms	2688 KB	Output is correct
36	Correct	3 ms	2688 KB	Output is correct
37	Correct	2 ms	2688 KB	Output is correct
38	Correct	2 ms	2688 KB	Output is correct
39	Correct	2 ms	2688 KB	Output is correct
40	Correct	3 ms	2688 KB	Output is correct
41	Correct	3 ms	2816 KB	Output is correct
42	Correct	3 ms	2816 KB	Output is correct
43	Correct	3 ms	2816 KB	Output is correct
44	Correct	3 ms	2816 KB	Output is correct
45	Correct	3 ms	2816 KB	Output is correct
46	Correct	4 ms	2732 KB	Output is correct
47	Correct	4 ms	2816 KB	Output is correct
48	Correct	3 ms	2816 KB	Output is correct
49	Correct	3 ms	2816 KB	Output is correct
50	Correct	3 ms	2816 KB	Output is correct
51	Correct	2 ms	2688 KB	Output is correct
52	Correct	3 ms	2944 KB	Output is correct

Subtask #6
0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2688 KB	Output is correct
2	Correct	2 ms	2688 KB	Output is correct
3	Correct	2 ms	2688 KB	Output is correct
4	Correct	2 ms	2664 KB	Output is correct
5	Correct	2 ms	2688 KB	Output is correct
6	Correct	2 ms	2688 KB	Output is correct
7	Correct	3 ms	2688 KB	Output is correct
8	Correct	2 ms	2688 KB	Output is correct
9	Correct	3 ms	2688 KB	Output is correct
10	Correct	2 ms	2688 KB	Output is correct
11	Correct	3 ms	2688 KB	Output is correct
12	Correct	3 ms	2688 KB	Output is correct
13	Correct	2 ms	2688 KB	Output is correct
14	Correct	2 ms	2688 KB	Output is correct
15	Correct	2 ms	2688 KB	Output is correct
16	Correct	3 ms	2688 KB	Output is correct
17	Correct	2 ms	2688 KB	Output is correct
18	Correct	2 ms	2688 KB	Output is correct
19	Correct	3 ms	2688 KB	Output is correct
20	Correct	2 ms	2688 KB	Output is correct
21	Correct	2 ms	2688 KB	Output is correct
22	Correct	2 ms	2688 KB	Output is correct
23	Correct	3 ms	2688 KB	Output is correct
24	Correct	3 ms	2688 KB	Output is correct
25	Correct	2 ms	2688 KB	Output is correct
26	Correct	2 ms	2688 KB	Output is correct
27	Correct	2 ms	2688 KB	Output is correct
28	Correct	2 ms	2688 KB	Output is correct
29	Correct	2 ms	2688 KB	Output is correct
30	Correct	2 ms	2688 KB	Output is correct
31	Correct	3 ms	2688 KB	Output is correct
32	Correct	2 ms	2688 KB	Output is correct
33	Correct	2 ms	2688 KB	Output is correct
34	Correct	2 ms	2688 KB	Output is correct
35	Correct	2 ms	2688 KB	Output is correct
36	Correct	3 ms	2688 KB	Output is correct
37	Correct	2 ms	2688 KB	Output is correct
38	Correct	2 ms	2688 KB	Output is correct
39	Correct	2 ms	2688 KB	Output is correct
40	Correct	2 ms	2688 KB	Output is correct
41	Correct	3 ms	2688 KB	Output is correct
42	Correct	4 ms	2688 KB	Output is correct
43	Correct	2 ms	2688 KB	Output is correct
44	Correct	2 ms	2688 KB	Output is correct
45	Correct	3 ms	2720 KB	Output is correct
46	Correct	2 ms	2688 KB	Output is correct
47	Correct	2 ms	2688 KB	Output is correct
48	Correct	2 ms	2688 KB	Output is correct
49	Correct	2 ms	2688 KB	Output is correct
50	Correct	2 ms	2688 KB	Output is correct
51	Correct	2 ms	2688 KB	Output is correct
52	Correct	3 ms	2688 KB	Output is correct
53	Correct	3 ms	2688 KB	Output is correct
54	Correct	12 ms	3452 KB	Output is correct
55	Correct	9 ms	3452 KB	Output is correct
56	Runtime error	68 ms	16616 KB	Execution killed with signal 11
57	Halted	0 ms	0 KB	-

답안 #280097

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 20.0 / 20.0

Subtask #3 0 / 20.0

Subtask #4 0 / 15.0

Subtask #5 20.0 / 20.0

Subtask #6 0 / 15.0

Subtask #1
10.0 / 10.0

Subtask #2
20.0 / 20.0

Subtask #3
0 / 20.0

Subtask #4
0 / 15.0

Subtask #5
20.0 / 20.0

Subtask #6
0 / 15.0