oj.uz

Submission #502830

# Submission time Handle Problem Language Result Execution time Memory
502830 2022-01-06T15:49:55 Z LucaIlie Divide and conquer (IZhO14_divide) C++17
48 / 100
 137 ms 12484 KB 
#include <iostream>
#include <algorithm>

#define int long long
#define MAX_N 100000

using namespace std;

struct val_and_poz {
    int poz;
    long long val;

    bool operator < (const val_and_poz &a) const {
        return val < a.val;
    }
};

struct AIB {
    long long aib[MAX_N + 1];

    void init() {
        int i;

        for ( i = 0; i <= MAX_N; i++ )
            aib[i] = (1LL << 60);
    }

    long long query( int i ) {
        long long minG;

        minG = (1LL << 60);
        while ( i > 0 ) {
            minG = min( minG, aib[i] );
            i -= (i & -i);
        }

        return minG;
    }

    void update( int i, long long x ) {
        while ( i <= MAX_N ) {
            aib[i] = min( aib[i], x );
            i += (i & -i);
        }
    }
};

int x[MAX_N + 1], g[MAX_N + 1], d[MAX_N + 1], small[MAX_N + 1], big[MAX_N + 1];
long long sg[MAX_N + 1], sd[MAX_N + 1];
val_and_poz norm[2 * MAX_N + 2];
AIB gold;

signed main() {
    int n, a, i;
    long long maxG;

    cin >> n;
    for ( i = 1; i <= n; i++ )
        cin >> x[i] >> g[i] >> d[i];

    for ( i = 1; i <= n; i++ ) {
        sg[i] = sg[i - 1] + g[i];
        sd[i] = sd[i - 1] + d[i];
    }

    for ( i = 0; i < n; i++ )
        norm[i] = { i, sd[i] - x[i + 1] };
    for ( i = 0; i < n; i++ )
        norm[n + i] = { n + i, sd[i + 1] - x[i + 1] };

    sort( norm, norm + 2 * n );

    a = 1;
    for ( i = 0; i < 2 * n; i++ ) {
        if ( norm[i].poz < n )
            small[norm[i].poz + 1] = a;
        else
            big[norm[i].poz - n + 1] = a;
        if ( i < 2 * n - 1 && norm[i].val != norm[i + 1].val )
            a++;
    }

    maxG = 0;
    gold.init();
    for ( i = 1; i <= n; i++ ) {
        gold.update( small[i], sg[i - 1] );
        maxG = max( maxG, sg[i] - gold.query( big[i] ) );
    }

    cout << maxG;

    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 2 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 2 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 1100 KB Output is correct
15 Correct 1 ms 1100 KB Output is correct
16 Correct 2 ms 1100 KB Output is correct
17 Correct 2 ms 1100 KB Output is correct
18 Correct 3 ms 1228 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 2 ms 1100 KB Output is correct
21 Correct 2 ms 1228 KB Output is correct
22 Correct 3 ms 1228 KB Output is correct
23 Correct 7 ms 1484 KB Output is correct
24 Correct 7 ms 1524 KB Output is correct

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1100 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 2 ms 1100 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 1100 KB Output is correct
15 Correct 1 ms 1100 KB Output is correct
16 Correct 2 ms 1100 KB Output is correct
17 Correct 2 ms 1100 KB Output is correct
18 Correct 3 ms 1228 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 2 ms 1100 KB Output is correct
21 Correct 2 ms 1228 KB Output is correct
22 Correct 3 ms 1228 KB Output is correct
23 Correct 7 ms 1484 KB Output is correct
24 Correct 7 ms 1524 KB Output is correct
25 Correct 5 ms 1484 KB Output is correct
26 Correct 8 ms 1868 KB Output is correct
27 Correct 10 ms 1868 KB Output is correct
28 Correct 52 ms 5364 KB Output is correct
29 Correct 65 ms 6596 KB Output is correct
30 Incorrect 137 ms 12484 KB Output isn't correct
31 Halted 0 ms 0 KB -