Submission #152438

#	Time	Username	Problem	Language	Result	Execution time	Memory
152438		cheetose	Examination (JOI19_examination)	C++11	41 / 100	2972 ms	403512 KiB

examination

#include<cstdio>
#include<cstdlib>
#include<iostream>
#include<vector>
#include<queue>
#include<bitset>
#include<string>
#include<stack>
#include<set>
#include<unordered_set>
#include<map>
#include<unordered_map>
#include<cstring>
#include<complex>
#include<cmath>
#include<iomanip>
#include<numeric>
#include<algorithm>
#include<list>
#include<functional>
#include<cassert>
#define mp make_pair
#define pb push_back
#define X first
#define Y second
#define y0 y12
#define y1 y22
#define INF 987654321
#define PI 3.141592653589793238462643383279502884
#define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
#define fdn(i,a,b,c) for(int (i)=(a);(i)>=(b);(i)-=(c))
#define MEM0(a) memset((a),0,sizeof(a));
#define MEM_1(a) memset((a),-1,sizeof(a));
#define ALL(a) a.begin(),a.end()
#define SYNC ios_base::sync_with_stdio(false);cin.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
typedef pair<ld, ld> Pd;
typedef vector<int> Vi;
typedef vector<ll> Vll;
typedef vector<double> Vd;
typedef vector<Pi> VPi;
typedef vector<Pll> VPll;
typedef vector<Pd> VPd;
typedef tuple<int, int, int> iii;
typedef tuple<int,int,int,int> iiii;
typedef tuple<ll, ll, ll> LLL;
typedef vector<iii> Viii;
typedef vector<LLL> VLLL;
typedef complex<double> base;
const ll MOD = 1000000007;
ll POW(ll a, ll b, ll MMM = MOD) {ll ret=1; for(;b;b>>=1,a=(a*a)%MMM)if(b&1)ret=(ret*a)% MMM; return ret; }
ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
ll lcm(ll a, ll b) { if (a == 0 || b == 0)return a + b; return a*(b / gcd(a, b)); }
int dx[] = { 0,1,0,-1,1,1,-1,-1 }, dy[] = { 1,0,-1,0,1,-1,1,-1 };

struct xnode{
	int yroot,L,R;
	xnode(){
		yroot=-1,L=-1,R=-1;
	}
};
struct ynode{
	int val,L,R;
	ynode(){
		val=0;
		L=-1,R=-1;
	}
};
vector<xnode> xtree;
vector<ynode> ytree;
int xinit(){
	xnode x;
	xtree.pb(x);
	return xtree.size()-1;
}
int yinit(){
	ynode y;
	ytree.pb(y);
	return ytree.size()-1;
}
void yupd(int node,int S,int E,int y)
{
	ytree[node].val++;
	if(S==E)return;
	int M=(S+E)>>1;
	if(y<=M)
	{
		if(ytree[node].L==-1)
		{
			int next=yinit();
			ytree[node].L=next;
		}
		yupd(ytree[node].L,S,M,y);
	}
	else
	{
		if(ytree[node].R==-1)
		{
			int next=yinit();
			ytree[node].R=next;
		}
		yupd(ytree[node].R,M+1,E,y);
	}
}
void upd(int node,int S,int E,int x,int y)//(x,y)좌표값 1증가
{
	if(xtree[node].yroot==-1)
	{
		int next=yinit();
		xtree[node].yroot=next;
	}
	yupd(xtree[node].yroot,0,(int)1e9,y);
	if(S==E)return;
	int M=(S+E)>>1;
	if(x<=M)
	{
		if(xtree[node].L==-1)
		{
			int next=xinit();
			xtree[node].L=next;
		}
		upd(xtree[node].L,S,M,x,y);
	}
	else
	{
		if(xtree[node].R==-1)
		{
			int next=xinit();
			xtree[node].R=next;
		}
		upd(xtree[node].R,M+1,E,x,y);
	}
}
int yfind(int node,int S,int E,int y1,int y2)
{
	if(y1>E || y2<S)return 0;
	if(y1<=S && y2>=E)return ytree[node].val;
	int res=0;
	if(~ytree[node].L)res+=yfind(ytree[node].L,S,(S+E)/2,y1,y2);
	if(~ytree[node].R)res+=yfind(ytree[node].R,(S+E)/2+1,E,y1,y2);
	return res;
}
int find(int node,int S,int E,int x1,int x2,int y1,int y2)
{
	if(x1>E || x2<S)return 0;
	if(x1<=S && x2>=E)return yfind(xtree[node].yroot,0,(int)1e9,y1,y2);
	int res=0;
	if(~xtree[node].L)res+=find(xtree[node].L,S,(S+E)/2,x1,x2,y1,y2);
	if(~xtree[node].R)res+=find(xtree[node].R,(S+E)/2+1,E,x1,x2,y1,y2);
	return res;
}

struct query{
	int x,y,z,i;
	bool operator <(const query &O)const{
		return z>O.z;
	}
}q[100000];
Pi p[100000];
int ans[100000];
int main() {
	xinit();
	int n,Q;
	scanf("%d%d",&n,&Q);
	fup(i,0,n-1,1)
		scanf("%d%d",&p[i].X,&p[i].Y);
	sort(p,p+n,[&](Pi p1,Pi p2){return p1.X+p1.Y>p2.X+p2.Y;});
	fup(i,0,Q-1,1)
	{
		scanf("%d%d%d",&q[i].x,&q[i].y,&q[i].z);
		q[i].i=i;
	}
	sort(q,q+Q);
	for(int i=0,j=0;i<Q;i++)
	{
		while(j<n && p[j].X+p[j].Y>=q[i].z)
		{
			upd(0,0,(int)1e9,p[j].X,p[j].Y);
			j++;
		}
		ans[q[i].i]=find(0,0,(int)1e9,q[i].x,(int)1e9,q[i].y,(int)1e9);
	}
	fup(i,0,Q-1,1)printf("%d\n",ans[i]);
}

Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:171:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&Q);
  ~~~~~^~~~~~~~~~~~~~
examination.cpp:173:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&p[i].X,&p[i].Y);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:177:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&q[i].x,&q[i].y,&q[i].z);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 0 / 57