oj.uz

Submission #153349

# Submission time Handle Problem Language Result Execution time Memory
153349 2019-09-13T15:18:24 Z Dilshod_Imomov Arranging Shoes (IOI19_shoes) C++17
25 / 100
 32 ms 2340 KB 
# include <bits/stdc++.h>
# pragma GCC optimize("Ofast")
# define ll long long
# define fi first
# define se second
# define pb push_back
# define pf push_front
# define For(i, a, b) for( ll i = a; i < b; i++ )
# define in insert
# define all(a) a.begin(),a.end()
# define pi pair < ll, ll >
# define readfile(file) freopen ( (file + ".in").c_str(), "r", stdin)
# define writefile(file) freopen ( (file + ".out").c_str(), "w", stdout)
# define speed ios_base::sync_with_stdio(false);cin.tie(NULL)
# define SET(file) readfile(file);writefile(file);
# define LARGE 100005
using namespace std;

ll count_swaps( vector < int > S ) {
    ll cnt = 0;
    int n = S.size();
    ll c = 0;
    For ( i, 0, n / 2 ) {
        if ( S[i] < 0 && S[i] != S[i + n / 2] && abs(S[i]) == abs(S[i + n / 2]) ) {
            c++;
        }
    }
    if ( c == n / 2 ) {
        ll ans = n / 2 - 1;
        ans *= n / 2;
        ans /= 2;
        return ans;
    }
    For ( i, 0, n ) {
        if ( S[i] != S[i + 1] && abs(S[i]) == abs(S[i + 1]) && S[i] < 0 ) {
            i++;
        }
        else {
            For ( j, i + 1, 2 * n ) {
                if ( S[i] != S[j] && abs(S[i]) == abs(S[j]) ) {
                    int val = S[j];
                    S.erase( S.begin() + j );
                    if ( S[i] < 0 ) {
                        cnt += j - i + 1;
                        vector < int > left(S.begin(), S.begin() + i);
                        vector < int > right( S.begin() + i, S.end() );
                        left.pb(val);
                        left.insert(left.end(), right.begin(), right.end());
                        S = left;
                    }
                    else {
                        cnt += j - i;
                        vector < int > left(S.begin(), S.begin() + i);
                        vector < int > right( S.begin() + i, S.end() );
                        right.insert(right.begin(), val);
                        left.insert(left.end(), right.begin(), right.end());
                        S = left;
                    }
                    break;
                }
            }
            i++;
        }
    }
    return cnt;
}
/*
int main() {
    /// Author: _Dilshod_
    speed;
    vector < int > S = {-1, 1};
    cout << count_swaps(S);
}
*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 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 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Incorrect 2 ms 376 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 252 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 31 ms 2300 KB Output is correct
6 Correct 32 ms 2296 KB Output is correct
7 Correct 31 ms 2296 KB Output is correct
8 Correct 30 ms 2296 KB Output is correct
9 Correct 32 ms 2296 KB Output is correct
10 Correct 31 ms 2340 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -