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Submission #229272

# Submission time Handle Problem Language Result Execution time Memory
229272 2020-05-04T02:54:38 Z 534351 Crosses on the Grid (FXCUP4_cross) C++17
100 / 100
 130 ms 12648 KB 
#include "cross.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

template<class T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

template<class T, class U>
void ckmin(T &a, U b)
{
    if (a > b) a = b;
}

template<class T, class U>
void ckmax(T &a, U b)
{
    if (a < b) a = b;
}

#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define SZ(x) ((int) (x).size())
#define ALL(x) (x).begin(), (x).end()
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;

const int MAXN = 200013;
const int INF = 1e9 + 7;
const ll LLINF = 3e18;

int N, K;
pll arr[MAXN];
priority_queue<ll, vector<ll>, greater<ll> > pq;
ll ans;

ll SelectCross(int kk, vi inner, vi outer)
{
    N = SZ(inner); K = kk;
    //2ab - b^2
    FOR(i, 0, N)
    {
        arr[i] = {inner[i], outer[i]};
    }
    sort(arr, arr + N, greater<pii>());
    // FOR(i, 0, N)
    // {
    //     cerr << arr[i].fi << ',' << arr[i].se << endl;
    // }
    FOR(i, 0, K)
    {
        pq.push(arr[i].se);
    }
    ckmax(ans, arr[K - 1].fi * (2 * pq.top() - arr[K - 1].fi));
    //delete the smallest, query the smallest.
    FOR(i, K, N)
    {
        pq.push(arr[i].se);
        pq.pop();
        ckmax(ans, arr[i].fi * (2 * pq.top() - arr[i].fi));
    }
    return ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 11 ms 1024 KB Output is correct
6 Correct 108 ms 10600 KB Output is correct
7 Correct 109 ms 10604 KB Output is correct
8 Correct 110 ms 10472 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 11 ms 1024 KB Output is correct
6 Correct 108 ms 10600 KB Output is correct
7 Correct 109 ms 10604 KB Output is correct
8 Correct 110 ms 10472 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 11 ms 1024 KB Output is correct
13 Correct 60 ms 5616 KB Output is correct
14 Correct 113 ms 10604 KB Output is correct
15 Correct 114 ms 10600 KB Output is correct
16 Correct 110 ms 10600 KB Output is correct

Subtask #3
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 11 ms 1024 KB Output is correct
6 Correct 108 ms 10600 KB Output is correct
7 Correct 109 ms 10604 KB Output is correct
8 Correct 110 ms 10472 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 11 ms 1024 KB Output is correct
13 Correct 60 ms 5616 KB Output is correct
14 Correct 113 ms 10604 KB Output is correct
15 Correct 114 ms 10600 KB Output is correct
16 Correct 110 ms 10600 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 11 ms 1280 KB Output is correct
20 Correct 63 ms 5744 KB Output is correct
21 Correct 91 ms 8428 KB Output is correct
22 Correct 117 ms 10604 KB Output is correct
23 Correct 121 ms 10728 KB Output is correct
24 Correct 130 ms 10988 KB Output is correct
25 Correct 120 ms 12648 KB Output is correct
26 Correct 115 ms 12648 KB Output is correct