HackerBlocks/MaxQuery1.cpp at master · robinrst/HackerBlocks · GitHub

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#include        "algorithm"
#include        "iostream"
#include        "numeric"
#include        "iomanip"
#include        "cstring"
#include        "math.h"
#include        "bitset"
#include        "string"
#include        "vector"
#include        "ctime"
#include        "queue"
#include        "stack"
#include        "map"
#include        "set"

#include        "ext/pb_ds/assoc_container.hpp" // Common file
#include        "ext/pb_ds/tree_policy.hpp" // Including tree_order_statistics_node_update
#include        "ext/pb_ds/detail/standard_policies.hpp"

using namespace std;
using namespace __gnu_pbds;


#define          f first
#define          lgn 25
#define          endl '\n'
#define          sc second
#define          N (int)2e5+5
#define          pb push_back
#define          mod 1000000007
#define          ld long double
#define          vi vector<int>
#define          eb emplace_back
#define          vpii vector<pii>
#define          mii map<int,int>
#define          int long long
#define          pii pair<int,int>
#define          pq priority_queue
#define          BLOCK (int)sqrt(N)
#define          test(x) while(x--)
#define          all(x) begin(x),end(x)
#define          allr(x) rbegin(x),rend(x)
#define          fo(i,a,n) for(int i=a;i<n;i++)
#define          rfo(i,n,a) for(int i=n;i>=a;i--)
#define          FAST ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define          time() cerr << "Time : " << (double)clock() / (double)CLOCKS_PER_SEC << "s\n"
#define          PI acos(-1.0)
#define 		 bug(...)       __f (#__VA_ARGS__, __VA_ARGS__)

typedef tree< int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update >
OS ;

template <typename Arg1>
void __f (const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << endl; }
template <typename Arg1, typename... Args>
void __f (const char* names, Arg1&& arg1, Args&&... args)
{
     const char* comma = strchr (names + 1, ',');
     cout.write (names, comma - names) << " : " << arg1 << " | "; __f (comma + 1, args...);
}

inline void INP()
{
	#ifndef ONLINE_JUDGE
	    freopen("input.txt","r",stdin);
	    freopen("output.txt","w",stdout);
	#endif
}

const int inf = 0x3f3f3f3f;
const int INF = 0x3f3f3f3f3f3f3f3f;

int n,m,k,q;
string s;
vi adj[N];
int vis[N],par[N],a[N];

vi segTree[4*N];

	void build(int v = 1, int tl = 0 , int tr = n-1)
	{
	    if(tl == tr )
	    {
	        segTree[v] = vi (1,a[tl]);
	        return;
	    }

	     int tm = (tl+tr)>>1;

	     build( v<<1 , tl, tm);
	     build( v<<1|1 , tm+1, tr);

	     merge( all(segTree[ v<<1 ]) , all( segTree[v<<1|1] ) , back_inserter(segTree[v] ) );
	}

	int query(int l, int r , int v = 1, int tl = 0, int tr = n-1 )
	{
	    if( l > tr || r < tl) return 0;
	    if( tl >= l and tr <= r )
	    {
	    	// bug(v,k);
	        auto xx = lower_bound( all(segTree[v]) , k) - begin(segTree[v]);
	        return segTree[v].size() - xx;
	    }

	    int tm = (tl+tr)/2;
	    int aa = query( l , r, v<<1 , tl , tm );
	    int bb = query( l , r, v<<1|1 , tm+1, tr );

		return ( aa + bb );
	}

void go()
{
	cin >> n;

	fo(i,0,n) cin >> a[i];

	build();

	cin >> q;

	fo(i,0,q)
	{
		int l, r;
		cin >> l >> r >> k;
		--l,--r;

		cout << query(l,r) << endl;
	}
}

int32_t main()
{
	INP();
	FAST;
	int t=1;
	// cin>>t;
	test(t) go();
}