HDU_1556_Color the ball

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<string>
#include<queue>
using namespace std;
int c[100005],n;
int lowbit(int x)
{
    return x&-x;
}
int sum(int x)
{
    int ret=0;
    while(x>0)
    {
        ret+=c[x];x-=lowbit(x);
    }
    return ret;
}
void add(int x,int d)
{
    while(x<=n)
    {
        c[x]+=d;x+=lowbit(x);
    }
}
int main()
{
    int a,b,i,j,k;
    while(~scanf("%d",&n)&&n)
    {
        for(i=1;i<=n;++i)
            c[i]=0;
        for(i=1;i<=n;++i)
        {
            scanf("%d%d",&a,&b);
            add(a,1);
            add(b+1,-1);
        }
        for(i=1;i<n;++i)
            printf("%d ",sum(i));
        printf("%d\n",sum(n));
    }
    return 0;
}