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Submission #200492

# Submission time Handle Problem Language Result Execution time Memory
200492 2020-02-07T00:16:40 Z Leonardo_Paes Arranging Shoes (IOI19_shoes) C++17
100 / 100
 340 ms 191568 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];

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

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 100 ms 135032 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 135032 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct
3 Correct 99 ms 135036 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 99 ms 135036 KB Output is correct
6 Correct 112 ms 135032 KB Output is correct
7 Correct 101 ms 135032 KB Output is correct
8 Correct 101 ms 135032 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 100 ms 135036 KB Output is correct
11 Correct 102 ms 135032 KB Output is correct
12 Correct 100 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 102 ms 135032 KB Output is correct
16 Correct 100 ms 135028 KB Output is correct
17 Correct 101 ms 135032 KB Output is correct
18 Correct 104 ms 135032 KB Output is correct
19 Correct 105 ms 135032 KB Output is correct
20 Correct 102 ms 135032 KB Output is correct
21 Correct 102 ms 135032 KB Output is correct
22 Correct 100 ms 135032 KB Output is correct
23 Correct 104 ms 135032 KB Output is correct
24 Correct 103 ms 135100 KB Output is correct
25 Correct 100 ms 135032 KB Output is correct
26 Correct 100 ms 135032 KB Output is correct
27 Correct 101 ms 135096 KB Output is correct
28 Correct 103 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 101 ms 135032 KB Output is correct
31 Correct 102 ms 135032 KB Output is correct
32 Correct 103 ms 135032 KB Output is correct
33 Correct 101 ms 135032 KB Output is correct
34 Correct 102 ms 135032 KB Output is correct
35 Correct 102 ms 135032 KB Output is correct
36 Correct 100 ms 135032 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 135032 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct
3 Correct 99 ms 135032 KB Output is correct
4 Correct 110 ms 135160 KB Output is correct
5 Correct 102 ms 135032 KB Output is correct
6 Correct 102 ms 135024 KB Output is correct
7 Correct 99 ms 134996 KB Output is correct
8 Correct 103 ms 135032 KB Output is correct
9 Correct 103 ms 135032 KB Output is correct
10 Correct 102 ms 135036 KB Output is correct
11 Correct 102 ms 135032 KB Output is correct
12 Correct 101 ms 135032 KB Output is correct
13 Correct 102 ms 135032 KB Output is correct
14 Correct 103 ms 135032 KB Output is correct
15 Correct 110 ms 135032 KB Output is correct
16 Correct 109 ms 135032 KB Output is correct
17 Correct 107 ms 135032 KB Output is correct
18 Correct 105 ms 135032 KB Output is correct
19 Correct 100 ms 135032 KB Output is correct
20 Correct 113 ms 135676 KB Output is correct
21 Correct 114 ms 135672 KB Output is correct
22 Correct 164 ms 139832 KB Output is correct
23 Correct 159 ms 139832 KB Output is correct
24 Correct 158 ms 139832 KB Output is correct
25 Correct 167 ms 140268 KB Output is correct
26 Correct 168 ms 139832 KB Output is correct
27 Correct 155 ms 139832 KB Output is correct
28 Correct 162 ms 140268 KB Output is correct
29 Correct 161 ms 140272 KB Output is correct
30 Correct 162 ms 140268 KB Output is correct
31 Correct 158 ms 139876 KB Output is correct
32 Correct 158 ms 140264 KB Output is correct
33 Correct 166 ms 140296 KB Output is correct
34 Correct 163 ms 140140 KB Output is correct
35 Correct 100 ms 135032 KB Output is correct
36 Correct 101 ms 135032 KB Output is correct
37 Correct 159 ms 140140 KB Output is correct
38 Correct 161 ms 140268 KB Output is correct
39 Correct 163 ms 140136 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 135036 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct
3 Correct 101 ms 135032 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 305 ms 191464 KB Output is correct
6 Correct 237 ms 144488 KB Output is correct
7 Correct 301 ms 191464 KB Output is correct
8 Correct 180 ms 140272 KB Output is correct
9 Correct 319 ms 191532 KB Output is correct
10 Correct 265 ms 165608 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 135032 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct
3 Correct 99 ms 135036 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 99 ms 135036 KB Output is correct
6 Correct 112 ms 135032 KB Output is correct
7 Correct 101 ms 135032 KB Output is correct
8 Correct 101 ms 135032 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 100 ms 135036 KB Output is correct
11 Correct 102 ms 135032 KB Output is correct
12 Correct 100 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 102 ms 135032 KB Output is correct
16 Correct 100 ms 135028 KB Output is correct
17 Correct 101 ms 135032 KB Output is correct
18 Correct 104 ms 135032 KB Output is correct
19 Correct 105 ms 135032 KB Output is correct
20 Correct 102 ms 135032 KB Output is correct
21 Correct 102 ms 135032 KB Output is correct
22 Correct 100 ms 135032 KB Output is correct
23 Correct 104 ms 135032 KB Output is correct
24 Correct 103 ms 135100 KB Output is correct
25 Correct 100 ms 135032 KB Output is correct
26 Correct 100 ms 135032 KB Output is correct
27 Correct 101 ms 135096 KB Output is correct
28 Correct 103 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 101 ms 135032 KB Output is correct
31 Correct 102 ms 135032 KB Output is correct
32 Correct 103 ms 135032 KB Output is correct
33 Correct 101 ms 135032 KB Output is correct
34 Correct 102 ms 135032 KB Output is correct
35 Correct 102 ms 135032 KB Output is correct
36 Correct 100 ms 135032 KB Output is correct
37 Correct 102 ms 135032 KB Output is correct
38 Correct 114 ms 135032 KB Output is correct
39 Correct 110 ms 135032 KB Output is correct
40 Correct 109 ms 135032 KB Output is correct
41 Correct 110 ms 135288 KB Output is correct
42 Correct 115 ms 135160 KB Output is correct
43 Correct 109 ms 135096 KB Output is correct
44 Correct 108 ms 135416 KB Output is correct
45 Correct 110 ms 135032 KB Output is correct
46 Correct 112 ms 135032 KB Output is correct
47 Correct 113 ms 135260 KB Output is correct
48 Correct 110 ms 135160 KB Output is correct
49 Correct 109 ms 135036 KB Output is correct
50 Correct 108 ms 135032 KB Output is correct
51 Correct 111 ms 135160 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 100 ms 135032 KB Output is correct
2 Correct 99 ms 135032 KB Output is correct
3 Correct 99 ms 135036 KB Output is correct
4 Correct 102 ms 135032 KB Output is correct
5 Correct 99 ms 135036 KB Output is correct
6 Correct 112 ms 135032 KB Output is correct
7 Correct 101 ms 135032 KB Output is correct
8 Correct 101 ms 135032 KB Output is correct
9 Correct 102 ms 135032 KB Output is correct
10 Correct 100 ms 135036 KB Output is correct
11 Correct 102 ms 135032 KB Output is correct
12 Correct 100 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 101 ms 135032 KB Output is correct
15 Correct 102 ms 135032 KB Output is correct
16 Correct 100 ms 135028 KB Output is correct
17 Correct 101 ms 135032 KB Output is correct
18 Correct 104 ms 135032 KB Output is correct
19 Correct 105 ms 135032 KB Output is correct
20 Correct 102 ms 135032 KB Output is correct
21 Correct 102 ms 135032 KB Output is correct
22 Correct 100 ms 135032 KB Output is correct
23 Correct 104 ms 135032 KB Output is correct
24 Correct 103 ms 135100 KB Output is correct
25 Correct 100 ms 135032 KB Output is correct
26 Correct 100 ms 135032 KB Output is correct
27 Correct 101 ms 135096 KB Output is correct
28 Correct 103 ms 135032 KB Output is correct
29 Correct 101 ms 135032 KB Output is correct
30 Correct 101 ms 135032 KB Output is correct
31 Correct 102 ms 135032 KB Output is correct
32 Correct 103 ms 135032 KB Output is correct
33 Correct 101 ms 135032 KB Output is correct
34 Correct 102 ms 135032 KB Output is correct
35 Correct 102 ms 135032 KB Output is correct
36 Correct 100 ms 135032 KB Output is correct
37 Correct 99 ms 135032 KB Output is correct
38 Correct 110 ms 135160 KB Output is correct
39 Correct 102 ms 135032 KB Output is correct
40 Correct 102 ms 135024 KB Output is correct
41 Correct 99 ms 134996 KB Output is correct
42 Correct 103 ms 135032 KB Output is correct
43 Correct 103 ms 135032 KB Output is correct
44 Correct 102 ms 135036 KB Output is correct
45 Correct 102 ms 135032 KB Output is correct
46 Correct 101 ms 135032 KB Output is correct
47 Correct 102 ms 135032 KB Output is correct
48 Correct 103 ms 135032 KB Output is correct
49 Correct 110 ms 135032 KB Output is correct
50 Correct 109 ms 135032 KB Output is correct
51 Correct 107 ms 135032 KB Output is correct
52 Correct 105 ms 135032 KB Output is correct
53 Correct 100 ms 135032 KB Output is correct
54 Correct 113 ms 135676 KB Output is correct
55 Correct 114 ms 135672 KB Output is correct
56 Correct 164 ms 139832 KB Output is correct
57 Correct 159 ms 139832 KB Output is correct
58 Correct 158 ms 139832 KB Output is correct
59 Correct 167 ms 140268 KB Output is correct
60 Correct 168 ms 139832 KB Output is correct
61 Correct 155 ms 139832 KB Output is correct
62 Correct 162 ms 140268 KB Output is correct
63 Correct 161 ms 140272 KB Output is correct
64 Correct 162 ms 140268 KB Output is correct
65 Correct 158 ms 139876 KB Output is correct
66 Correct 158 ms 140264 KB Output is correct
67 Correct 166 ms 140296 KB Output is correct
68 Correct 163 ms 140140 KB Output is correct
69 Correct 100 ms 135032 KB Output is correct
70 Correct 101 ms 135032 KB Output is correct
71 Correct 159 ms 140140 KB Output is correct
72 Correct 161 ms 140268 KB Output is correct
73 Correct 163 ms 140136 KB Output is correct
74 Correct 101 ms 135036 KB Output is correct
75 Correct 99 ms 135032 KB Output is correct
76 Correct 101 ms 135032 KB Output is correct
77 Correct 102 ms 135032 KB Output is correct
78 Correct 305 ms 191464 KB Output is correct
79 Correct 237 ms 144488 KB Output is correct
80 Correct 301 ms 191464 KB Output is correct
81 Correct 180 ms 140272 KB Output is correct
82 Correct 319 ms 191532 KB Output is correct
83 Correct 265 ms 165608 KB Output is correct
84 Correct 102 ms 135032 KB Output is correct
85 Correct 114 ms 135032 KB Output is correct
86 Correct 110 ms 135032 KB Output is correct
87 Correct 109 ms 135032 KB Output is correct
88 Correct 110 ms 135288 KB Output is correct
89 Correct 115 ms 135160 KB Output is correct
90 Correct 109 ms 135096 KB Output is correct
91 Correct 108 ms 135416 KB Output is correct
92 Correct 110 ms 135032 KB Output is correct
93 Correct 112 ms 135032 KB Output is correct
94 Correct 113 ms 135260 KB Output is correct
95 Correct 110 ms 135160 KB Output is correct
96 Correct 109 ms 135036 KB Output is correct
97 Correct 108 ms 135032 KB Output is correct
98 Correct 111 ms 135160 KB Output is correct
99 Correct 111 ms 135544 KB Output is correct
100 Correct 109 ms 135288 KB Output is correct
101 Correct 123 ms 137848 KB Output is correct
102 Correct 123 ms 136000 KB Output is correct
103 Correct 294 ms 166380 KB Output is correct
104 Correct 246 ms 139836 KB Output is correct
105 Correct 258 ms 139980 KB Output is correct
106 Correct 340 ms 191400 KB Output is correct
107 Correct 207 ms 139876 KB Output is correct
108 Correct 217 ms 139840 KB Output is correct
109 Correct 179 ms 140268 KB Output is correct
110 Correct 167 ms 140140 KB Output is correct
111 Correct 339 ms 185960 KB Output is correct
112 Correct 308 ms 175032 KB Output is correct
113 Correct 259 ms 146132 KB Output is correct
114 Correct 315 ms 191568 KB Output is correct
115 Correct 322 ms 191468 KB Output is correct