oj.uz

답안 #153361

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
153361 2019-09-13T16:52:30 Z Dilshod_Imomov Arranging Shoes (IOI19_shoes) C++17
10 / 100
 1000 ms 4308 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;
    ll x = 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 ( abs(S[i]) == abs(S[i + n / 2]) ) x++;
    }
    if ( x == n / 2 ) {
        vector < int > ms;
        vector < int > ps;
        For ( i, 0, n ) {
            if ( S[i] < 0 ) ms.pb(i);
            else ps.pb(i);
        }
        For ( i, 0, n ) {
            if ( i >= ms[0] ) {
                ms.erase(ms.begin());
            }
            if ( i >= ps[0] ) {
                ps.erase(ps.begin());
            }
            if ( S[i] != S[i + 1] && abs(S[i]) == abs(S[i + 1]) && S[i] < 0 ) {
                i++;
            }
            else {
                if ( S[i] > 0 ) {
                    for ( int j = ms[0]; j > i; j-- ) {
                        swap( S[j], S[j - 1] );
                        cnt++;
                    }
                    ms.erase(ms.begin());
                }
                else {
                    for ( int j = ps[0]; j > i + 1; j-- ) {
                        swap( S[j], S[j - 1] );
                        cnt++;
                    }
                    ps.erase(ps.begin());
                }
                i++;
            }
        }
        return cnt;
    }
    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]) ) {
                    for ( int k = j; k > i + 1; k-- ) {
                        swap( S[k], S[k - 1] );
                        cnt++;
                    }
                    if ( S[i] > 0 ) {
                        swap( S[i], S[i + 1] );
                        cnt++;
                    }
                    break;
                }
            }
            i++;
        }
    }
    return cnt;
}
/*
int main() {
    /// Author: _Dilshod_
    speed;
    vector < int > S = {1, 1, 1, -1, -1, -1};
    cout << count_swaps(S);
}
*/

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Incorrect 2 ms 376 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 360 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 3 ms 376 KB Output is correct
20 Correct 22 ms 760 KB Output is correct
21 Correct 22 ms 760 KB Output is correct
22 Execution timed out 1067 ms 4120 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Execution timed out 1067 ms 4308 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Incorrect 2 ms 376 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Incorrect 2 ms 376 KB Output isn't correct
8 Halted 0 ms 0 KB -