#include <bits/stdc++.h>
#include <algorithm>
#include <vector>
#include <cmath>
#include <map>
#define ci(n) cin>>n
#define co(n) cout<<n
#define nl '\n'
#define r0 return 0
#define LLMAX LLONG_MAX
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define printstr(s) for(int i=0;i<(int)s.size();i++) { cout<<s[i];}
typedef std::pair<int, int> pp;
typedef long long ll;
typedef std::vector<ll> vl;
typedef std::vector<std::pair<int, int>> vp;
typedef std::vector<int> vi;
typedef std::unordered_map<int, int> unmap;
typedef std::unordered_set<int> unset;
typedef std::unordered_set<char> unsetc;
using namespace std;
const int max_size = 100005;
vector<bitset<1005>> b(max_size);//matrix of bitsets.
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
// unordered_map<ll, ll> mp;
// mp.reserve(1024);
// mp.max_load_factor(0.25);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
ll n, q;
ci(n); ci(q);
for (int i = 1; i <= n; ++i)
{
ll k;
ci(k);
for (int j = 0; j < k; ++j)
{
ll item; ci(item);
b[i].set(item);//in stock.
}
}
while (q--)
{
int curquery;
ci(curquery);
// co(curquery); co(nl);
if (curquery == 1) //have to replace items in a shop
{
ll shop; ci(shop);
ll k;
ci(k);
// const int curk = k;
bitset < 1005> items;
items.reset();
for (int i = 0; i < k; ++i)
{
int x; ci(x);
items[x] = 1;
b[shop] &= items;//the common ones will stay 1.
//others will become 0.
}
}
else
{
ll l, r; ci(l); ci(r);
ll k; ci(k);
bitset < 1005> items;
items.reset();
for (int i = 0; i < k ; ++i)
{
int x; ci(x);
items[x] = 1;//items he is willing to sell. the shopkeepers
//will buy only if their intersection with the chef is 0.
//that is , no common items
}
bitset<1005> cur;
cur.reset();
ll res = 0;
for (int i = l; i <= r; ++i)
{
cur = b[i];
cur &= items;
if (cur.count() == 0)
{
res++;
}
cur.reset();
}
co(res); co(nl);
}
}
r0;
}
The above code compiles fine and gives the correct output too on my local machine but its TLEIng when I submit it to the OJ, could anyone help me out? thanks. The problem statement : https://www.codechef.com/problems/T30?tab=statement