CF56E Domino Principle(dp)

// Problem: CF56E Domino Principle
// Contest: Luogu
// URL: https://www.luogu.com.cn/problem/CF56E
// Memory Limit: 250 MB
// Time Limit: 2000 ms
// Author:Cutele
// 
// Powered by CP Editor (https://cpeditor.org)

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll>PLL;
typedef pair<int, int>PII;
typedef pair<double, double>PDD;
#define I_int ll
inline ll read()
{
    ll x = 0, f = 1;
    char ch = getchar();
    while(ch < '0' || ch > '9')
    {
        if(ch == '-')f = -1;
        ch = getchar();
    }
    while(ch >= '0' && ch <= '9')
    {
        x = x * 10 + ch - '0';
        ch = getchar();
    }
    return x * f;
}
  
inline void out(ll x){
    if (x < 0) x = ~x + 1, putchar('-');
    if (x > 9) out(x / 10);
    putchar(x % 10 + '0');
}
  
inline void write(ll x){
    if (x < 0) x = ~x + 1, putchar('-');
    if (x > 9) write(x / 10);
    putchar(x % 10 + '0');
}
  
#define read read()
#define closeSync ios::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define multiCase int T;cin>>T;for(int t=1;t<=T;t++)
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define repp(i,a,b) for(int i=(a);i<(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
#define perr(i,a,b) for(int i=(a);i>(b);i--)
ll ksm(ll a, ll b,ll p)
{
    ll res = 1;
    while(b)
    {
        if(b & 1)res = res * a%p;
        a = a * a %p;
        b >>= 1;
    }
    return res;
}

const int inf = 0x3f3f3f3f;
const int maxn=1e5+7;

int n,las[maxn],ans[maxn];
struct node{
	int x,h,id;
}a[maxn];

bool cmp(node a,node b){
	return a.x<b.x;
}

int main(){
	n=read;
	rep(i,1,n){
		a[i].x=read,a[i].h=read;a[i].id=i;
		ans[i]=1;
	}
	sort(a+1,a+1+n,cmp);
	
	for(int i = n-1 ; i ; i--){
		int now = i + 1 ;
		while(now >=1 && a[i].x + a[i].h - 1 >= a[now].x){
			ans[a[i].id]+=ans[a[now].id];
			now=las[now];
		}
		las[i]=now;
	}
	
	rep(i,1,n) cout<<ans[i]<<" ";
	return 0;
}


posted @ 2021-08-03 13:04  OvO1  阅读(40)  评论(0编辑  收藏  举报