oj.uz

Submission #228068

# Submission time Handle Problem Language Result Execution time Memory
228068 2020-04-29T19:48:13 Z qkxwsm Bulldozer (JOI17_bulldozer) C++14
5 / 100
 28 ms 384 KB 
#include <bits/stdc++.h>

using namespace std;

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 = 2013;

struct point
{
    ll x, y, w;
};

int N;
point arr[MAXN];
vpl angs;
ll ans;

bool cmp(point a, point b)
{
    return a.x < b.x;
}
bool cmpy(point a, point b)
{
    return a.y < b.y;
}

int32_t main()
{
    cout << fixed << setprecision(12);
    cerr << fixed << setprecision(4);
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> N;
    FOR(i, 0, N)
    {
        cin >> arr[i].x >> arr[i].y >> arr[i].w;
        ckmax(ans, arr[i].w);
    }
    sort(arr, arr + N, cmp);
    ll sum = 0;
    FOR(i, 0, N)
    {
        sum += arr[i].w;
        if (i == N - 1 || arr[i + 1].x != arr[i].x)
        {
            ckmax(ans, sum);
            ckmax(sum, 0);
        }
    }
    sort(arr, arr + N, cmpy);
    sum = 0;
    FOR(i, 0, N)
    {
        sum += arr[i].w;
        if (i == N - 1 || arr[i + 1].y != arr[i].y)
        {
            ckmax(ans, sum);
            ckmax(sum, 0);
        }
    }
    FOR(i, 0, N)
    {
        FOR(j, i + 1, N)
        {
            ll dx = arr[j].x - arr[i].x, dy = arr[i].y - arr[j].y;
            if (dx == 0 || dy == 0) continue;
            vpl ok;
            FOR(k, 0, N)
            {
                ok.PB({dy * arr[k].x + dx * arr[k].y, arr[k].w});
            }
            sort(ALL(ok));
            // cerr << "OK\n";
            // for (pll p : ok)
            // {
            //     cerr << p.fi << ' ' << p.se << endl;
            // }
            int idx = -1;
            FOR(k, 0, N - 1)
            {
                if (ok[k].fi == ok[k + 1].fi)
                {
                    assert(idx == -1);
                    idx = k;
                }
            }
            assert(idx != -1);
            sum = ok[idx].se + ok[idx + 1].se;
            ckmax(ans, sum);
            FORD(j, idx, 0)
            {
                sum += ok[j].se;
                ckmax(ans, sum);
            }
            sum = ok[idx].se + ok[idx + 1].se;
            FOR(j, idx + 2, N)
            {
                sum += ok[j].se;
                ckmax(ans, sum);
            }
        }
    }
    cout << ans << '\n';
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Incorrect 28 ms 384 KB Output isn't correct
17 Halted 0 ms 0 KB -