#include 
     
      using namespace std;int main(){	int ct = 0;	for(int i = 99; i <= 100000; i++){		int a[8], len = 0;		int j = i;		while(j){			a[len++] = j % 10;			j /= 10;		}			int k, jian = 0, zeng = 0;		for(k = 1; k < len; k++){			if(a[k] < a[k - 1]){				jian = 1;				if(zeng)	//上升后又下降，就不合题意 					break;						}			else if(a[k] > a[k - 1] && jian){				zeng = 1;			}			else				break;		}		if(k >= len && zeng)  //并且有增有降 			ct++;	}	cout << ct << endl;	return 0;}