Submission #151669

# Submission time Handle Problem Language Result Execution time Memory
151669 2019-09-04T05:15:23 Z ae04071 Arranging Shoes (IOI19_shoes) C++14
100 / 100
530 ms 22912 KB
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
using lli = long long;
using pii = pair<int,int>;

int n;
struct seg_tr{
    int tr[200001];
    void init() {
        for(int i=0;i<=n;i++) tr[i] = 0;
    }
    void upd(int cur, int val) {
        while(cur<=n) tr[cur]+=val, cur+=cur&-cur;
    }
    int get(int cur) {
        int ret=0;
        while(cur) ret+=tr[cur], cur-=cur&-cur;
        return ret;
    }
}seg;
long long count_swaps(vector<int> s) {
    set<pii> vi, iv;
    n = s.size();
    seg.init();
    for(int i=0;i<s.size();i++) {
        vi.insert({s[i], i});
        iv.insert({i, s[i]});
        seg.upd(i+1, 1);
    }
    
    lli ans = 0;
    int n=s.size() / 2;
    for(int i=0;i<n;i++) {
        auto st = iv.begin();
        auto mat = vi.lower_bound({-st->se, 0});
        ans += seg.get(mat->se);
        if(st->se < 0) ans--;
        
        seg.upd(st->fi+1, -1);
        seg.upd(mat->se+1, -1);
        iv.erase({mat->se, -st->se});
        vi.erase(mat);
        vi.erase({st->se, st->fi});
        iv.erase(st);
    }
    return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<s.size();i++) {
                 ~^~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 252 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 360 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 KB Output is correct
33 Correct 2 ms 380 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 4 ms 504 KB Output is correct
19 Correct 3 ms 504 KB Output is correct
20 Correct 18 ms 2552 KB Output is correct
21 Correct 18 ms 2552 KB Output is correct
22 Correct 211 ms 22684 KB Output is correct
23 Correct 226 ms 22904 KB Output is correct
24 Correct 213 ms 22768 KB Output is correct
25 Correct 233 ms 22588 KB Output is correct
26 Correct 210 ms 22792 KB Output is correct
27 Correct 225 ms 22516 KB Output is correct
28 Correct 229 ms 22648 KB Output is correct
29 Correct 234 ms 22840 KB Output is correct
30 Correct 227 ms 22748 KB Output is correct
31 Correct 206 ms 22780 KB Output is correct
32 Correct 209 ms 22776 KB Output is correct
33 Correct 230 ms 22552 KB Output is correct
34 Correct 229 ms 22776 KB Output is correct
35 Correct 2 ms 252 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 213 ms 22792 KB Output is correct
38 Correct 206 ms 22664 KB Output is correct
39 Correct 213 ms 22896 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 395 ms 22756 KB Output is correct
6 Correct 424 ms 22784 KB Output is correct
7 Correct 384 ms 22728 KB Output is correct
8 Correct 210 ms 22876 KB Output is correct
9 Correct 397 ms 22904 KB Output is correct
10 Correct 403 ms 22876 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 252 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 360 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 KB Output is correct
33 Correct 2 ms 380 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 4 ms 504 KB Output is correct
42 Correct 4 ms 504 KB Output is correct
43 Correct 4 ms 504 KB Output is correct
44 Correct 4 ms 504 KB Output is correct
45 Correct 4 ms 504 KB Output is correct
46 Correct 3 ms 504 KB Output is correct
47 Correct 4 ms 504 KB Output is correct
48 Correct 4 ms 504 KB Output is correct
49 Correct 4 ms 504 KB Output is correct
50 Correct 3 ms 504 KB Output is correct
51 Correct 3 ms 504 KB Output is correct
52 Correct 4 ms 504 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 252 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 360 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 KB Output is correct
33 Correct 2 ms 380 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 2 ms 256 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 256 KB Output is correct
42 Correct 2 ms 256 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 256 KB Output is correct
45 Correct 2 ms 256 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 256 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 4 ms 504 KB Output is correct
53 Correct 3 ms 504 KB Output is correct
54 Correct 18 ms 2552 KB Output is correct
55 Correct 18 ms 2552 KB Output is correct
56 Correct 211 ms 22684 KB Output is correct
57 Correct 226 ms 22904 KB Output is correct
58 Correct 213 ms 22768 KB Output is correct
59 Correct 233 ms 22588 KB Output is correct
60 Correct 210 ms 22792 KB Output is correct
61 Correct 225 ms 22516 KB Output is correct
62 Correct 229 ms 22648 KB Output is correct
63 Correct 234 ms 22840 KB Output is correct
64 Correct 227 ms 22748 KB Output is correct
65 Correct 206 ms 22780 KB Output is correct
66 Correct 209 ms 22776 KB Output is correct
67 Correct 230 ms 22552 KB Output is correct
68 Correct 229 ms 22776 KB Output is correct
69 Correct 2 ms 252 KB Output is correct
70 Correct 2 ms 256 KB Output is correct
71 Correct 213 ms 22792 KB Output is correct
72 Correct 206 ms 22664 KB Output is correct
73 Correct 213 ms 22896 KB Output is correct
74 Correct 2 ms 256 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 256 KB Output is correct
77 Correct 2 ms 256 KB Output is correct
78 Correct 395 ms 22756 KB Output is correct
79 Correct 424 ms 22784 KB Output is correct
80 Correct 384 ms 22728 KB Output is correct
81 Correct 210 ms 22876 KB Output is correct
82 Correct 397 ms 22904 KB Output is correct
83 Correct 403 ms 22876 KB Output is correct
84 Correct 2 ms 256 KB Output is correct
85 Correct 2 ms 376 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 2 ms 376 KB Output is correct
88 Correct 4 ms 504 KB Output is correct
89 Correct 4 ms 504 KB Output is correct
90 Correct 4 ms 504 KB Output is correct
91 Correct 4 ms 504 KB Output is correct
92 Correct 4 ms 504 KB Output is correct
93 Correct 3 ms 504 KB Output is correct
94 Correct 4 ms 504 KB Output is correct
95 Correct 4 ms 504 KB Output is correct
96 Correct 4 ms 504 KB Output is correct
97 Correct 3 ms 504 KB Output is correct
98 Correct 3 ms 504 KB Output is correct
99 Correct 4 ms 504 KB Output is correct
100 Correct 4 ms 504 KB Output is correct
101 Correct 28 ms 2556 KB Output is correct
102 Correct 29 ms 2552 KB Output is correct
103 Correct 530 ms 22912 KB Output is correct
104 Correct 411 ms 22780 KB Output is correct
105 Correct 462 ms 22776 KB Output is correct
106 Correct 379 ms 22764 KB Output is correct
107 Correct 456 ms 22860 KB Output is correct
108 Correct 410 ms 22788 KB Output is correct
109 Correct 200 ms 22648 KB Output is correct
110 Correct 234 ms 22800 KB Output is correct
111 Correct 390 ms 22804 KB Output is correct
112 Correct 483 ms 22776 KB Output is correct
113 Correct 489 ms 22776 KB Output is correct
114 Correct 415 ms 22780 KB Output is correct
115 Correct 390 ms 22760 KB Output is correct