Submission #938554

#	Time	Username	Problem	Language	Result	Execution time	Memory
938554		danikoynov	Two Dishes (JOI19_dishes)	C++14	0 / 100	10050 ms	30520 KiB

dishes

#include <bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

const int maxn = 2e5 + 10;

int n, m;
ll a[maxn], s[maxn], p[maxn];
ll b[maxn], t[maxn], q[maxn];
ll pref[2][maxn];

void input()
{
    cin >> n >> m;
    for (int i = 1; i <= n; i ++)
        cin >> a[i] >> s[i] >> p[i];
    for (int i = 1; i <= m; i ++)
        cin >> b[i] >> t[i] >> q[i];
}

void prefix_sums()
{
    for (int i = 1; i <= n; i ++)
    {
        pref[0][i] = pref[0][i - 1] + a[i];
    }
    for (int i = 1; i <= m; i ++)
    {
        pref[1][i] = pref[1][i - 1] + b[i];
    }
}

ll dp[maxn];
vector < pair < int, ll > > upd[maxn];
int X[maxn], Y[maxn];
const ll inf = 1e18;
void dynamic()
{
    for (int i = 1; i <= n; i ++)
    {
        ll free_time = s[i] - pref[0][i];
        while(X[i] <= m && pref[1][X[i]] <= free_time)
            X[i] ++;
        X[i] --;

        if (X[i] >= 0)
        {
            upd[i - 1].push_back({X[i] + 1, - p[i]});
            ///cout << "point " << i - 1 << " " << X[i] + 1 << " " << -p[i] << endl;
        }

    }

    for (int i = 1; i <= m; i ++)
    {
        ll free_time = t[i] - pref[1][i];
        while(Y[i] <= m && pref[0][Y[i]] <= free_time)
            Y[i] ++;
        Y[i] --;

        if (Y[i] >= 0)
        {
            upd[Y[i]].push_back({i, q[i]});

                ///cout << "point " << Y[i] << " " << i << " " << q[i] << endl;
        }
    }

    for (int j = 0; j <= m; j ++)
        dp[j] = 0;
    for (int i = 1; i <= n; i ++)
    {
        sort(upd[i].begin(), upd[i].end());
        for (pair < int, ll > cur : upd[i - 1])
        {
            for (int d = cur.first; d <= m; d ++)
            {
                dp[d] += cur.second;
            }
        }

        for (int j = 1; j <= m; j ++)
        {
            dp[j] = max(dp[j], dp[j - 1]);
        }
        /**cout << "state " << i << endl;
        for (int j = 0; j <= m; j ++)
            cout << dp[j] << " ";
        cout << endl;*/
    }

    ll res = 0;
    for (int i = 1; i <= n; i ++)
        res += p[i];
    for (pair < int, ll > cur : upd[n])
    {
        if (cur.first <= m)
        res += cur.second;
    }

    res = res + dp[m];
    cout << res << endl;




    /**for (int i = 0; i <= n; i ++)
    {
        for (int j = 0; j <= m; j ++)
        {
            if (i > 0)
            {
                dp[i][j] = max(dp[i][j], dp[i - 1][j] + (pref[0][i] + pref[1][j] <= s[i]));
            }
            if (j > 0)
            {
                dp[i][j] = max(dp[i][j], dp[i][j - 1] + (pref[0][i] + pref[1][j] <= t[j]));
            }

            ///cout << "state " << i << "  " << j << " " << dp[i][j] << endl;
        }
    }

    cout << dp[n][m] << endl;*/



}
void solve()
{
    input();
    prefix_sums();
    dynamic();
}

int main()
{
    speed();
    solve();
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 3
• Subtask 3: 0 / 7
• Subtask 4: 0 / 39
• Subtask 5: 0 / 11
• Subtask 6: 0 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9