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Submission #200494

# Submission time Handle Problem Language Result Execution time Memory
200494 2020-02-07T00:18:05 Z Leonardo_Paes Arranging Shoes (IOI19_shoes) C++17
100 / 100
 312 ms 191596 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 2e5+10;

typedef long long ll;
typedef pair<int,int> pii;

int n;

ll bit[maxn];

inline ll sum(int x){
    ll res = 0;
    while(x>0){
        res += bit[x];
        x -= (x&-x);
    }
    return res;
}

inline void upd(int x, ll v){
    while(x<maxn){
        bit[x] += v;
        x += (x&-x);
    }
}

deque<int> d[maxn];

ll count_swaps(vector<int> s){
    n = s.size();

    ll ans = 0LL;

    vector<pii> l, r;

    for(int i=0; i<n; i++){
        if(!d[abs(s[i])].empty() and d[abs(s[i])].back() != s[i]){
            d[abs(s[i])].pop_back();
            r.push_back({abs(s[i]), i});
            if(s[i] < 0) ans++;
        }
        else{
            d[abs(s[i])].push_front(s[i]);
            l.push_back({abs(s[i]), i});
        }
    }
    sort(l.begin(), l.end());
    sort(r.begin(), r.end());

    for(int i=0; i<l.size(); i++){
        r[i].first = l[i].second;
        l[i].first = l[i].second;
    }

    sort(l.begin(), l.end());
    sort(r.begin(), r.end());

    int tt = 0;

    for(int i=0; i<l.size(); i++){
        s[l[i].second] = ++tt;
        s[r[i].second] = ++tt;
    }

    for(int i=0; i<n; i++){
        upd(s[i], 1LL);
        ans += sum(n) - sum(s[i]);
    }

    return ans;
}

/*int main(){
    int n;

    cin >> n;

    vector<int> s;

    while(n--){
        int x;
        cin >> x;
        s.push_back(x);
    }

    cout << count_swaps(s) << endl;
}*/

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:53:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<l.size(); i++){
                  ~^~~~~~~~~
shoes.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<l.size(); i++){
                  ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct
3 Correct 109 ms 135032 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 103 ms 135032 KB Output is correct
6 Correct 100 ms 135032 KB Output is correct
7 Correct 106 ms 135008 KB Output is correct
8 Correct 100 ms 135036 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 102 ms 135032 KB Output is correct
11 Correct 101 ms 135032 KB Output is correct
12 Correct 101 ms 135032 KB Output is correct
13 Correct 103 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 101 ms 135032 KB Output is correct
16 Correct 105 ms 135032 KB Output is correct
17 Correct 108 ms 135032 KB Output is correct
18 Correct 100 ms 135044 KB Output is correct
19 Correct 101 ms 135032 KB Output is correct
20 Correct 103 ms 135032 KB Output is correct
21 Correct 104 ms 135032 KB Output is correct
22 Correct 102 ms 135032 KB Output is correct
23 Correct 101 ms 135032 KB Output is correct
24 Correct 103 ms 135020 KB Output is correct
25 Correct 99 ms 135032 KB Output is correct
26 Correct 105 ms 135132 KB Output is correct
27 Correct 104 ms 135032 KB Output is correct
28 Correct 100 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 104 ms 135160 KB Output is correct
31 Correct 99 ms 135032 KB Output is correct
32 Correct 102 ms 135032 KB Output is correct
33 Correct 99 ms 135036 KB Output is correct
34 Correct 103 ms 135032 KB Output is correct
35 Correct 104 ms 135032 KB Output is correct
36 Correct 101 ms 135032 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct
3 Correct 99 ms 135032 KB Output is correct
4 Correct 101 ms 135032 KB Output is correct
5 Correct 101 ms 135160 KB Output is correct
6 Correct 99 ms 135032 KB Output is correct
7 Correct 102 ms 135032 KB Output is correct
8 Correct 100 ms 135032 KB Output is correct
9 Correct 102 ms 135160 KB Output is correct
10 Correct 102 ms 135032 KB Output is correct
11 Correct 105 ms 135032 KB Output is correct
12 Correct 102 ms 135032 KB Output is correct
13 Correct 101 ms 135032 KB Output is correct
14 Correct 103 ms 135032 KB Output is correct
15 Correct 111 ms 135032 KB Output is correct
16 Correct 108 ms 134952 KB Output is correct
17 Correct 110 ms 135032 KB Output is correct
18 Correct 106 ms 135032 KB Output is correct
19 Correct 107 ms 135080 KB Output is correct
20 Correct 115 ms 135672 KB Output is correct
21 Correct 117 ms 135672 KB Output is correct
22 Correct 160 ms 139832 KB Output is correct
23 Correct 154 ms 139832 KB Output is correct
24 Correct 154 ms 139832 KB Output is correct
25 Correct 157 ms 140136 KB Output is correct
26 Correct 165 ms 139832 KB Output is correct
27 Correct 158 ms 139832 KB Output is correct
28 Correct 159 ms 140268 KB Output is correct
29 Correct 163 ms 140264 KB Output is correct
30 Correct 158 ms 140264 KB Output is correct
31 Correct 157 ms 139876 KB Output is correct
32 Correct 160 ms 140268 KB Output is correct
33 Correct 158 ms 140264 KB Output is correct
34 Correct 161 ms 140188 KB Output is correct
35 Correct 99 ms 135032 KB Output is correct
36 Correct 101 ms 135032 KB Output is correct
37 Correct 157 ms 140264 KB Output is correct
38 Correct 158 ms 140144 KB Output is correct
39 Correct 156 ms 140268 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct
3 Correct 102 ms 135032 KB Output is correct
4 Correct 101 ms 135032 KB Output is correct
5 Correct 312 ms 191440 KB Output is correct
6 Correct 214 ms 144464 KB Output is correct
7 Correct 308 ms 191508 KB Output is correct
8 Correct 180 ms 140272 KB Output is correct
9 Correct 301 ms 191596 KB Output is correct
10 Correct 261 ms 165608 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct
3 Correct 109 ms 135032 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 103 ms 135032 KB Output is correct
6 Correct 100 ms 135032 KB Output is correct
7 Correct 106 ms 135008 KB Output is correct
8 Correct 100 ms 135036 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 102 ms 135032 KB Output is correct
11 Correct 101 ms 135032 KB Output is correct
12 Correct 101 ms 135032 KB Output is correct
13 Correct 103 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 101 ms 135032 KB Output is correct
16 Correct 105 ms 135032 KB Output is correct
17 Correct 108 ms 135032 KB Output is correct
18 Correct 100 ms 135044 KB Output is correct
19 Correct 101 ms 135032 KB Output is correct
20 Correct 103 ms 135032 KB Output is correct
21 Correct 104 ms 135032 KB Output is correct
22 Correct 102 ms 135032 KB Output is correct
23 Correct 101 ms 135032 KB Output is correct
24 Correct 103 ms 135020 KB Output is correct
25 Correct 99 ms 135032 KB Output is correct
26 Correct 105 ms 135132 KB Output is correct
27 Correct 104 ms 135032 KB Output is correct
28 Correct 100 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 104 ms 135160 KB Output is correct
31 Correct 99 ms 135032 KB Output is correct
32 Correct 102 ms 135032 KB Output is correct
33 Correct 99 ms 135036 KB Output is correct
34 Correct 103 ms 135032 KB Output is correct
35 Correct 104 ms 135032 KB Output is correct
36 Correct 101 ms 135032 KB Output is correct
37 Correct 99 ms 135032 KB Output is correct
38 Correct 115 ms 135064 KB Output is correct
39 Correct 112 ms 135032 KB Output is correct
40 Correct 111 ms 135160 KB Output is correct
41 Correct 112 ms 135288 KB Output is correct
42 Correct 112 ms 135092 KB Output is correct
43 Correct 111 ms 135032 KB Output is correct
44 Correct 112 ms 135416 KB Output is correct
45 Correct 112 ms 135032 KB Output is correct
46 Correct 110 ms 135032 KB Output is correct
47 Correct 116 ms 135288 KB Output is correct
48 Correct 111 ms 135160 KB Output is correct
49 Correct 112 ms 135032 KB Output is correct
50 Correct 132 ms 135032 KB Output is correct
51 Correct 112 ms 135032 KB Output is correct
52 Correct 111 ms 135544 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 135032 KB Output is correct
2 Correct 100 ms 135032 KB Output is correct
3 Correct 109 ms 135032 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 103 ms 135032 KB Output is correct
6 Correct 100 ms 135032 KB Output is correct
7 Correct 106 ms 135008 KB Output is correct
8 Correct 100 ms 135036 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 102 ms 135032 KB Output is correct
11 Correct 101 ms 135032 KB Output is correct
12 Correct 101 ms 135032 KB Output is correct
13 Correct 103 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 101 ms 135032 KB Output is correct
16 Correct 105 ms 135032 KB Output is correct
17 Correct 108 ms 135032 KB Output is correct
18 Correct 100 ms 135044 KB Output is correct
19 Correct 101 ms 135032 KB Output is correct
20 Correct 103 ms 135032 KB Output is correct
21 Correct 104 ms 135032 KB Output is correct
22 Correct 102 ms 135032 KB Output is correct
23 Correct 101 ms 135032 KB Output is correct
24 Correct 103 ms 135020 KB Output is correct
25 Correct 99 ms 135032 KB Output is correct
26 Correct 105 ms 135132 KB Output is correct
27 Correct 104 ms 135032 KB Output is correct
28 Correct 100 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 104 ms 135160 KB Output is correct
31 Correct 99 ms 135032 KB Output is correct
32 Correct 102 ms 135032 KB Output is correct
33 Correct 99 ms 135036 KB Output is correct
34 Correct 103 ms 135032 KB Output is correct
35 Correct 104 ms 135032 KB Output is correct
36 Correct 101 ms 135032 KB Output is correct
37 Correct 99 ms 135032 KB Output is correct
38 Correct 101 ms 135032 KB Output is correct
39 Correct 101 ms 135160 KB Output is correct
40 Correct 99 ms 135032 KB Output is correct
41 Correct 102 ms 135032 KB Output is correct
42 Correct 100 ms 135032 KB Output is correct
43 Correct 102 ms 135160 KB Output is correct
44 Correct 102 ms 135032 KB Output is correct
45 Correct 105 ms 135032 KB Output is correct
46 Correct 102 ms 135032 KB Output is correct
47 Correct 101 ms 135032 KB Output is correct
48 Correct 103 ms 135032 KB Output is correct
49 Correct 111 ms 135032 KB Output is correct
50 Correct 108 ms 134952 KB Output is correct
51 Correct 110 ms 135032 KB Output is correct
52 Correct 106 ms 135032 KB Output is correct
53 Correct 107 ms 135080 KB Output is correct
54 Correct 115 ms 135672 KB Output is correct
55 Correct 117 ms 135672 KB Output is correct
56 Correct 160 ms 139832 KB Output is correct
57 Correct 154 ms 139832 KB Output is correct
58 Correct 154 ms 139832 KB Output is correct
59 Correct 157 ms 140136 KB Output is correct
60 Correct 165 ms 139832 KB Output is correct
61 Correct 158 ms 139832 KB Output is correct
62 Correct 159 ms 140268 KB Output is correct
63 Correct 163 ms 140264 KB Output is correct
64 Correct 158 ms 140264 KB Output is correct
65 Correct 157 ms 139876 KB Output is correct
66 Correct 160 ms 140268 KB Output is correct
67 Correct 158 ms 140264 KB Output is correct
68 Correct 161 ms 140188 KB Output is correct
69 Correct 99 ms 135032 KB Output is correct
70 Correct 101 ms 135032 KB Output is correct
71 Correct 157 ms 140264 KB Output is correct
72 Correct 158 ms 140144 KB Output is correct
73 Correct 156 ms 140268 KB Output is correct
74 Correct 99 ms 135032 KB Output is correct
75 Correct 100 ms 135032 KB Output is correct
76 Correct 102 ms 135032 KB Output is correct
77 Correct 101 ms 135032 KB Output is correct
78 Correct 312 ms 191440 KB Output is correct
79 Correct 214 ms 144464 KB Output is correct
80 Correct 308 ms 191508 KB Output is correct
81 Correct 180 ms 140272 KB Output is correct
82 Correct 301 ms 191596 KB Output is correct
83 Correct 261 ms 165608 KB Output is correct
84 Correct 99 ms 135032 KB Output is correct
85 Correct 115 ms 135064 KB Output is correct
86 Correct 112 ms 135032 KB Output is correct
87 Correct 111 ms 135160 KB Output is correct
88 Correct 112 ms 135288 KB Output is correct
89 Correct 112 ms 135092 KB Output is correct
90 Correct 111 ms 135032 KB Output is correct
91 Correct 112 ms 135416 KB Output is correct
92 Correct 112 ms 135032 KB Output is correct
93 Correct 110 ms 135032 KB Output is correct
94 Correct 116 ms 135288 KB Output is correct
95 Correct 111 ms 135160 KB Output is correct
96 Correct 112 ms 135032 KB Output is correct
97 Correct 132 ms 135032 KB Output is correct
98 Correct 112 ms 135032 KB Output is correct
99 Correct 111 ms 135544 KB Output is correct
100 Correct 111 ms 135288 KB Output is correct
101 Correct 123 ms 137848 KB Output is correct
102 Correct 125 ms 136132 KB Output is correct
103 Correct 288 ms 166252 KB Output is correct
104 Correct 245 ms 139836 KB Output is correct
105 Correct 240 ms 140008 KB Output is correct
106 Correct 306 ms 191464 KB Output is correct
107 Correct 207 ms 139876 KB Output is correct
108 Correct 215 ms 139836 KB Output is correct
109 Correct 177 ms 140272 KB Output is correct
110 Correct 161 ms 140264 KB Output is correct
111 Correct 304 ms 185836 KB Output is correct
112 Correct 289 ms 175084 KB Output is correct
113 Correct 214 ms 146156 KB Output is correct
114 Correct 305 ms 191592 KB Output is correct
115 Correct 300 ms 191468 KB Output is correct