Submission #991860

#	Time	Username	Problem	Language	Result	Execution time	Memory
991860		n3rm1n	Food Court (JOI21_foodcourt)	C++17	7 / 100	537 ms	524288 KiB

foodcourt

#include<bits/stdc++.h>
#define endl '\n'
#define ll long long
using namespace std;
const long long MAXN = 7e4+10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
long long n, m, q;

vector < pair < long long/**number*/, long long/**colour*/> > g[MAXN];
vector < pair < long long, long long > > pref[MAXN];
long long cutted[MAXN];
vector < pair < long long, long long > >  lazy[MAXN * 4];

long long ql, qr, val;
long long find_pref(long long ttime, long long shop)
{
    long long l = 0, r = pref[shop].size()-1, mid, ans = 0;
    while(l <= r)
    {
        mid = (l + r)/2;
        if(pref[shop][mid].second <= ttime)
        {
            ans = mid;
            l = mid + 1;
        }
        else r = mid - 1;
    }
    return pref[shop][ans].first;
}
void push_lazy(long long i, long long l, long long r)
{
    if(lazy[i].size() != 0 && l == r)
    {
        long long vall, timerr;
        for (long long j = 0; j < lazy[i].size(); ++ j)
        {
            vall = lazy[i][j].first;
            timerr = lazy[i][j].second;
            cutted[l] += min(find_pref(timerr, l) - cutted[l], vall);
        }
    }
    if(l != r)
    {
        for (long long j = 0; j < lazy[i].size(); ++ j)
        {
            lazy[2*i].push_back(lazy[i][j]);
            lazy[2*i+1].push_back(lazy[i][j]);
        }
    }
    lazy[i].clear();
}
long long tt;
void update(long long i, long long l, long long r)
{
    push_lazy(i, l, r);
    if(ql <= l && r <= qr)
    {
        lazy[i].push_back({val, tt});
        push_lazy(i, l, r);
        return;
    }
    if(qr < l || ql > r)return;
    long long mid = (l + r)/2;
    update(2*i, l, mid);
    update(2*i+1, mid+1, r);
}
long long x;
long long query(long long i, long long l, long long r)
{
    push_lazy(i, l, r);
    if(l == r)
    {
        push_lazy(i, l, r);
        return cutted[l];
    }
    long long mid = (l + r)/2;
    if(x <= mid)return query(2*i, l, mid);
    else return query(2*i+1, mid+1, r);
}
void solve()
{
    cin >> n >> m >> q;
    long long type, l, r, k, c;
    for (long long i = 1; i <= n; ++ i)
    {
        pref[i].push_back({0, 0});
        g[i].push_back({0, 0});
    }
    long long aa, bb;

    for (long long i = 1; i <= q; ++ i)
    {
        cin >> type;
        if(type == 1)
        {
            cin >> l >> r >> c >> k;
            for (long long j = l; j <= r; ++ j)
            {
                g[j].push_back(make_pair(k, c));
                pref[j].push_back(make_pair(pref[j].back().first+k, i));
            }
        }
        else if(type == 2)
        {
            cin >> l >> r >> k;
            ql = l;
            qr = r;
            val = k;
            tt = i;
            update(1, 1, n);
        }
        else
        {

            cin >> aa >> bb;
            x = aa;
            long long loose = query(1, 1, n);

          //  cout << loose << endl;
           /// cout << "* " << cutted[aa] << " " << endl;
            long long l = 0, r = pref[aa].size()-1, mid, ans = 0;
            while(l <= r)
            {
                mid = (l + r)/2;
                if(pref[aa][mid].first < bb + loose)
                {
                    l = mid + 1;
                }
                else
                {
                    ans = mid;
                    r = mid - 1;
                }
            }

            cout << g[aa][ans].second << endl;
        }
    }
}
int main()
{
    speed();


    solve();
    return 0;
}

Compilation message (stderr)

foodcourt.cpp: In function 'void push_lazy(long long int, long long int, long long int)':
foodcourt.cpp:40:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         for (long long j = 0; j < lazy[i].size(); ++ j)
      |                               ~~^~~~~~~~~~~~~~~~
foodcourt.cpp:49:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for (long long j = 0; j < lazy[i].size(); ++ j)
      |                               ~~^~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 0 / 7
• Subtask 4: 0 / 21
• Subtask 5: 0 / 15
• Subtask 6: 0 / 13
• Subtask 7: 0 / 26
• Subtask 8: 0 / 11