oj.uz

Submission #210942

# Submission time Handle Problem Language Result Execution time Memory
210942 2020-03-19T03:21:21 Z wiwiho Arranging Shoes (IOI19_shoes) C++14
100 / 100
 387 ms 147356 KB 
//#define NDEBUG

#include <bits/stdc++.h>
#include <bits/extc++.h>

#include "shoes.h"

#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define mp(a, b) make_pair(a, b)
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define pob pop_back()
#define pof pop_front()
#define F first
#define S second
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
    if(pvaspace) b << " "; pvaspace=true;\
    b << pva;\
}\
b << "\n";}
#define pii pair<int, int>
#define pll pair<ll, ll>
#define tiii tuple<int, int, int>
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define iceil(a, b) ((a) / (b) + !!((a) % (b)))

//#define TEST

typedef long long ll;
typedef unsigned long long ull;

using namespace std;
using namespace __gnu_pbds;

const ll MOD = 1000000007;
const ll MAX = 2147483647;

template<typename A, typename B>
ostream &operator<<(ostream &o, pair<A, B> p){
    return o << '(' << p.F << ',' << p.S << ')';
}

vector<ll> BIT;

int lowbit(int x){
    return x & -x;
}

void modify(int x, int v){
    for(; x < BIT.size(); x += lowbit(x)) BIT[x] += v;
}

ll query(int x){
    if(x == 0) return 0;
    ll ans = 0;
    for(; x > 0; x -= lowbit(x)) ans += BIT[x];
    return ans;
}

ll query(int l, int r){
    if(r < l) return 0;
    return query(r) - query(l - 1);
}

ll count_swaps(vector<int> s){

    int n = s.size();
    s.insert(s.begin(), 0);
    BIT.resize(n + 1);
    for(int i = 1; i <= n; i++) modify(i, 1);

    ll ans = 0;
    unordered_map<ll, queue<int>> pos;
    for(int i = 1; i <= n; i++){
        pos[s[i]].push(i);
    }

    for(int i = 1; i <= n; i++){
        if(pos[s[i]].empty() || pos[s[i]].front() != i) continue;
        int t = pos[-s[i]].front();
        pos[s[i]].pop();
        pos[-s[i]].pop();
        ans += query(i + 1, t - 1);
        if(s[i] > 0) ans++;
        modify(i, -1);
        modify(t, -1);
    }

    return ans;
}

Compilation message

shoes.cpp: In function 'void modify(int, int)':
shoes.cpp:57:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(; x < BIT.size(); x += lowbit(x)) BIT[x] += v;
           ~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 6 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 256 KB Output is correct
23 Correct 4 ms 256 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 9 ms 384 KB Output is correct
36 Correct 6 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 13 ms 896 KB Output is correct
21 Correct 10 ms 768 KB Output is correct
22 Correct 72 ms 5480 KB Output is correct
23 Correct 56 ms 5592 KB Output is correct
24 Correct 62 ms 5608 KB Output is correct
25 Correct 62 ms 5348 KB Output is correct
26 Correct 67 ms 5584 KB Output is correct
27 Correct 61 ms 5328 KB Output is correct
28 Correct 57 ms 5608 KB Output is correct
29 Correct 64 ms 5608 KB Output is correct
30 Correct 64 ms 5584 KB Output is correct
31 Correct 61 ms 5608 KB Output is correct
32 Correct 79 ms 5608 KB Output is correct
33 Correct 67 ms 5352 KB Output is correct
34 Correct 54 ms 5480 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 5 ms 256 KB Output is correct
37 Correct 64 ms 5480 KB Output is correct
38 Correct 60 ms 5608 KB Output is correct
39 Correct 58 ms 5608 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 316 ms 147332 KB Output is correct
6 Correct 109 ms 17260 KB Output is correct
7 Correct 317 ms 147356 KB Output is correct
8 Correct 62 ms 5608 KB Output is correct
9 Correct 303 ms 147356 KB Output is correct
10 Correct 235 ms 76008 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 6 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 256 KB Output is correct
23 Correct 4 ms 256 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 9 ms 384 KB Output is correct
36 Correct 6 ms 384 KB Output is correct
37 Correct 5 ms 256 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 5 ms 512 KB Output is correct
40 Correct 5 ms 768 KB Output is correct
41 Correct 7 ms 1792 KB Output is correct
42 Correct 7 ms 1792 KB Output is correct
43 Correct 7 ms 1664 KB Output is correct
44 Correct 6 ms 1536 KB Output is correct
45 Correct 6 ms 1280 KB Output is correct
46 Correct 7 ms 1152 KB Output is correct
47 Correct 6 ms 1024 KB Output is correct
48 Correct 5 ms 768 KB Output is correct
49 Correct 6 ms 640 KB Output is correct
50 Correct 6 ms 384 KB Output is correct
51 Correct 5 ms 384 KB Output is correct
52 Correct 8 ms 1792 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 6 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 256 KB Output is correct
23 Correct 4 ms 256 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 9 ms 384 KB Output is correct
36 Correct 6 ms 384 KB Output is correct
37 Correct 5 ms 256 KB Output is correct
38 Correct 5 ms 256 KB Output is correct
39 Correct 5 ms 256 KB Output is correct
40 Correct 5 ms 256 KB Output is correct
41 Correct 5 ms 256 KB Output is correct
42 Correct 5 ms 384 KB Output is correct
43 Correct 5 ms 384 KB Output is correct
44 Correct 6 ms 256 KB Output is correct
45 Correct 5 ms 256 KB Output is correct
46 Correct 5 ms 256 KB Output is correct
47 Correct 3 ms 384 KB Output is correct
48 Correct 5 ms 384 KB Output is correct
49 Correct 5 ms 384 KB Output is correct
50 Correct 5 ms 256 KB Output is correct
51 Correct 5 ms 384 KB Output is correct
52 Correct 5 ms 384 KB Output is correct
53 Correct 5 ms 384 KB Output is correct
54 Correct 13 ms 896 KB Output is correct
55 Correct 10 ms 768 KB Output is correct
56 Correct 72 ms 5480 KB Output is correct
57 Correct 56 ms 5592 KB Output is correct
58 Correct 62 ms 5608 KB Output is correct
59 Correct 62 ms 5348 KB Output is correct
60 Correct 67 ms 5584 KB Output is correct
61 Correct 61 ms 5328 KB Output is correct
62 Correct 57 ms 5608 KB Output is correct
63 Correct 64 ms 5608 KB Output is correct
64 Correct 64 ms 5584 KB Output is correct
65 Correct 61 ms 5608 KB Output is correct
66 Correct 79 ms 5608 KB Output is correct
67 Correct 67 ms 5352 KB Output is correct
68 Correct 54 ms 5480 KB Output is correct
69 Correct 5 ms 384 KB Output is correct
70 Correct 5 ms 256 KB Output is correct
71 Correct 64 ms 5480 KB Output is correct
72 Correct 60 ms 5608 KB Output is correct
73 Correct 58 ms 5608 KB Output is correct
74 Correct 5 ms 256 KB Output is correct
75 Correct 5 ms 256 KB Output is correct
76 Correct 5 ms 384 KB Output is correct
77 Correct 5 ms 384 KB Output is correct
78 Correct 316 ms 147332 KB Output is correct
79 Correct 109 ms 17260 KB Output is correct
80 Correct 317 ms 147356 KB Output is correct
81 Correct 62 ms 5608 KB Output is correct
82 Correct 303 ms 147356 KB Output is correct
83 Correct 235 ms 76008 KB Output is correct
84 Correct 5 ms 256 KB Output is correct
85 Correct 5 ms 384 KB Output is correct
86 Correct 5 ms 512 KB Output is correct
87 Correct 5 ms 768 KB Output is correct
88 Correct 7 ms 1792 KB Output is correct
89 Correct 7 ms 1792 KB Output is correct
90 Correct 7 ms 1664 KB Output is correct
91 Correct 6 ms 1536 KB Output is correct
92 Correct 6 ms 1280 KB Output is correct
93 Correct 7 ms 1152 KB Output is correct
94 Correct 6 ms 1024 KB Output is correct
95 Correct 5 ms 768 KB Output is correct
96 Correct 6 ms 640 KB Output is correct
97 Correct 6 ms 384 KB Output is correct
98 Correct 5 ms 384 KB Output is correct
99 Correct 8 ms 1792 KB Output is correct
100 Correct 7 ms 1792 KB Output is correct
101 Correct 34 ms 13696 KB Output is correct
102 Correct 14 ms 3616 KB Output is correct
103 Correct 387 ms 147340 KB Output is correct
104 Correct 313 ms 147356 KB Output is correct
105 Correct 316 ms 86428 KB Output is correct
106 Correct 345 ms 147356 KB Output is correct
107 Correct 139 ms 20628 KB Output is correct
108 Correct 160 ms 36444 KB Output is correct
109 Correct 62 ms 5736 KB Output is correct
110 Correct 55 ms 5608 KB Output is correct
111 Correct 320 ms 131680 KB Output is correct
112 Correct 327 ms 115996 KB Output is correct
113 Correct 155 ms 22376 KB Output is correct
114 Correct 330 ms 147356 KB Output is correct
115 Correct 306 ms 147356 KB Output is correct