oj.uz

Submission #404516

# Submission time Handle Problem Language Result Execution time Memory
404516 2021-05-14T14:11:26 Z Theo830 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 119 ms 15648 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
ll INF = 1e9+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "shoes.h"
ll bit[300005] = {0};
ll N = 300004;
void upd(ll k,ll x){
    while(k <= N){
        bit[k] += x;
        k += k & -k;
    }
}
ll sum(ll k){
    ll ans = 0;
    while(k >= 1){
        ans += bit[k];
        k -= k & - k;
    }
    return ans;
}
long long count_swaps(std::vector<int> s){
    ll n = s.size() / 2;
    ll ans = 0;
    vll exo[n+5][2];
    ll p = 0;
    for(auto x:s){
        exo[abs(x)][x > 0].pb(p);
        p++;
    }
    f(i,0,n+5){
        reverse(all(exo[i][0]));
        reverse(all(exo[i][1]));
    }
    ll cur = 0;
    f(i,0,n){
        while(sum(cur+1) == cur+1){
            cur++;
        }
        bool e = s[cur] > 0;
        ll pos = exo[abs(s[cur])][e ^ 1].back();
        exo[abs(s[cur])][e ^ 1].pop_back();
        exo[abs(s[cur])][e].pop_back();
        ll ppos = pos,pcur = cur;
        pos += sum(2*n+5) - sum(pos+1);
        cur += sum(2*n+5) - sum(cur+1);
        ans += pos - cur - 1;
        ans += e;
        pos = ppos;
        cur = pcur;
        upd(cur+1,1);
        upd(pos+1,1);
    }
    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 296 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 300 KB Output is correct
32 Correct 1 ms 288 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 5 ms 1508 KB Output is correct
21 Correct 6 ms 1444 KB Output is correct
22 Correct 49 ms 10280 KB Output is correct
23 Correct 44 ms 10224 KB Output is correct
24 Correct 48 ms 10192 KB Output is correct
25 Correct 42 ms 10140 KB Output is correct
26 Correct 46 ms 11156 KB Output is correct
27 Correct 51 ms 10904 KB Output is correct
28 Correct 52 ms 11040 KB Output is correct
29 Correct 43 ms 11028 KB Output is correct
30 Correct 50 ms 11036 KB Output is correct
31 Correct 47 ms 11068 KB Output is correct
32 Correct 49 ms 11000 KB Output is correct
33 Correct 42 ms 10912 KB Output is correct
34 Correct 42 ms 11044 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 51 ms 11044 KB Output is correct
38 Correct 43 ms 11064 KB Output is correct
39 Correct 43 ms 11064 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 119 ms 14420 KB Output is correct
6 Correct 67 ms 11844 KB Output is correct
7 Correct 93 ms 15540 KB Output is correct
8 Correct 42 ms 11532 KB Output is correct
9 Correct 82 ms 15532 KB Output is correct
10 Correct 73 ms 12872 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 296 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 300 KB Output is correct
32 Correct 1 ms 288 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 236 KB Output is correct
39 Correct 2 ms 296 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 460 KB Output is correct
42 Correct 2 ms 432 KB Output is correct
43 Correct 2 ms 460 KB Output is correct
44 Correct 2 ms 436 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 460 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 296 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 296 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 300 KB Output is correct
32 Correct 1 ms 288 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 5 ms 1508 KB Output is correct
55 Correct 6 ms 1444 KB Output is correct
56 Correct 49 ms 10280 KB Output is correct
57 Correct 44 ms 10224 KB Output is correct
58 Correct 48 ms 10192 KB Output is correct
59 Correct 42 ms 10140 KB Output is correct
60 Correct 46 ms 11156 KB Output is correct
61 Correct 51 ms 10904 KB Output is correct
62 Correct 52 ms 11040 KB Output is correct
63 Correct 43 ms 11028 KB Output is correct
64 Correct 50 ms 11036 KB Output is correct
65 Correct 47 ms 11068 KB Output is correct
66 Correct 49 ms 11000 KB Output is correct
67 Correct 42 ms 10912 KB Output is correct
68 Correct 42 ms 11044 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 51 ms 11044 KB Output is correct
72 Correct 43 ms 11064 KB Output is correct
73 Correct 43 ms 11064 KB Output is correct
74 Correct 1 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 1 ms 332 KB Output is correct
77 Correct 1 ms 332 KB Output is correct
78 Correct 119 ms 14420 KB Output is correct
79 Correct 67 ms 11844 KB Output is correct
80 Correct 93 ms 15540 KB Output is correct
81 Correct 42 ms 11532 KB Output is correct
82 Correct 82 ms 15532 KB Output is correct
83 Correct 73 ms 12872 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 1 ms 236 KB Output is correct
86 Correct 2 ms 296 KB Output is correct
87 Correct 1 ms 332 KB Output is correct
88 Correct 1 ms 460 KB Output is correct
89 Correct 2 ms 432 KB Output is correct
90 Correct 2 ms 460 KB Output is correct
91 Correct 2 ms 436 KB Output is correct
92 Correct 1 ms 332 KB Output is correct
93 Correct 1 ms 332 KB Output is correct
94 Correct 1 ms 332 KB Output is correct
95 Correct 1 ms 332 KB Output is correct
96 Correct 1 ms 332 KB Output is correct
97 Correct 1 ms 332 KB Output is correct
98 Correct 1 ms 332 KB Output is correct
99 Correct 1 ms 460 KB Output is correct
100 Correct 2 ms 460 KB Output is correct
101 Correct 7 ms 1772 KB Output is correct
102 Correct 7 ms 1484 KB Output is correct
103 Correct 94 ms 15636 KB Output is correct
104 Correct 96 ms 15648 KB Output is correct
105 Correct 102 ms 13324 KB Output is correct
106 Correct 75 ms 15604 KB Output is correct
107 Correct 61 ms 11972 KB Output is correct
108 Correct 61 ms 12228 KB Output is correct
109 Correct 44 ms 11828 KB Output is correct
110 Correct 45 ms 11044 KB Output is correct
111 Correct 87 ms 14940 KB Output is correct
112 Correct 88 ms 14256 KB Output is correct
113 Correct 68 ms 12008 KB Output is correct
114 Correct 85 ms 15604 KB Output is correct
115 Correct 76 ms 15528 KB Output is correct