Submission #917101

#	Time	Username	Problem	Language	Result	Execution time	Memory
917101		8pete8	NLO (COCI18_nlo)	C++17	110 / 110	1354 ms	6692 KiB

nlo

#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<cassert>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include<bitset> 
#include<stack>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define pppiiii pair<pii,pii>
#define ppii pair<int,pii>
#define all(x) x.begin(),x.end()
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-loops")
#define int long long
const int mod=998244353,mxn=1e5+5,lg=30,inf=1e18,minf=-1e9,Mxn=100000,root=700;
int n,m;
void setIO(string name){		
	ios_base::sync_with_stdio(0); cin.tie(0);		
	freopen((name+".in").c_str(),"r",stdin);		
	freopen((name+".out").c_str(),"w",stdout);	
}
pii cal(int x,int y,int d,int r){
    d=(x-d)*(x-d);
    r=(r*r)-d;
    if(r<0)return {inf,inf};
    r=sqrtl(r);
    return {y-r,y+r};
}
struct seg{
	ll v[4*mxn+10],add[4*mxn+10];
	void init(){for(int i=0;i<=4*n;i++)v[i]=0,add[i]=-1;}
	void push(int l,int r,int pos){
        if(add[pos]==-1)return;
        v[pos]=add[pos]*(r-l+1);
		if(l!=r)add[pos*2]=add[pos*2+1]=add[pos];
		add[pos]=-1;
	}
	void update(int l,int r,int ql,int qr,int pos,int val){
		push(l,r,pos);
		if(l>qr||r<ql)return;
		if(l>=ql&&r<=qr){
			add[pos]=val;
			push(l,r,pos);
			return;
		}
		int mid=l+(r-l)/2;
		update(l,mid,ql,qr,pos*2,val);
		update(mid+1,r,ql,qr,pos*2+1,val);
        v[pos]=v[pos*2]+v[pos*2+1];
	}
	int qry(int l,int r,int ql,int qr,int pos){
		push(l,r,pos);
		if(l>qr||r<ql)return 0;
		if(l>=ql&&r<=qr)return v[pos];
		int mid=l+(r-l)/2;
		return (qry(l,mid,ql,qr,pos*2)+qry(mid+1,r,ql,qr,pos*2+1));
	}
}t;
int32_t main(){
	//setIO("lifeguards");
	cin>>n>>m;
    int k;cin>>k;
    vector<pair<pii,int>>v(k);
    for(int i=0;i<k;i++)cin>>v[i].f.f>>v[i].f.s>>v[i].s;
    int ans=0;
    t.init();
    for(int i=1;i<=n;i++){
        for(int j=0;j<k;j++){
            pii a=cal(v[j].f.f,v[j].f.s,i,v[j].s);
            if(a.f!=inf)t.update(1,m,a.f,a.s,1,j+1);
        }
        ans+=(k*m)-t.qry(1,m,1,m,1);
        t.update(1,m,1,m,1,0);
        
    }
    cout<<ans;
}

Compilation message (stderr)

nlo.cpp: In function 'void setIO(std::string)':
nlo.cpp:36:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nlo.cpp:37:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 110 / 110