HDOJ 1556 Color the ball

#include <iostream>
#include <cstdio>
#include <string>
#include <cstring>
#include <vector>
#include <deque>
#include <list>
#include <cctype>
#include <algorithm>
#include <climits>
#include <queue>
#include <stack>
#include <cmath>
#include <map>
#include <set>
#include <iomanip>
#include <cstdlib>
#include <ctime>
#define ll long long
#define ull unsigned long long
#define all(x) (x).begin(), (x).end()
#define clr(a, v) memset( a , v , sizeof(a) )
#define pb push_back
#define mp make_pair
#define read(f) freopen(f, "r", stdin)
#define write(f) freopen(f, "w", stdout)
using namespace std;

int cnt[100005];
int n;

void add ( int x, int k )
{
for ( ; x <= n; x += ( x & -x ) )
cnt[x] += k;
}

int query ( int x )
{
int ans = 0;
for ( ; x > 0; x -= ( x & -x ) )
ans += cnt[x];
return ans;
}

int main()
{
ios::sync_with_stdio( false );
int t;
while ( cin >> n && n )
{
int a, b;
clr ( cnt, 0 );
for ( int i = 0; i < n; i ++ )
{
cin >> a >> b;
add ( a, 1 );
add ( b + 1, -1 );
}
for ( int i = 1; i < n; i ++ )
{
cout << query ( i ) << ' ';
}
cout << query( n ) << endl;
}
return 0;
}