tấm chiếu mới .-.

include <stdio.h>

int main() {
int n, m;
scanf("%d", &n);
scanf("%d", &m);

if (n < 1 || m < 1) {
    return 1;
}

for (int i = 0; i < n; i++) {
    for (int j = 0; j < m; j++) 
        printf("#");
    }
    printf("\n");


return 0 ; }

wibu chua

include <bits/stdc++.h>

using namespace std ;
int main()
{
vector<int>arr;
int n;
while(cin >> n)
{
arr.push_back(n);
}

int dem = 0;
for(int i = 0; i < arr.size(); i++)
{
    for(int j = 0; j < i; j++)
    {
        if(arr[i]==arr[j])
        break;
        else 
    {
        dem++;
    }
    }

}
cout << dem;

return 0 ;

}

f1=open('PLEASANT.INP','r')
f2=open('PLEASANT.OUT','w')
a=int(f1.readline())
b=int(f1.readline())
def dz(i):
i=str(i)
for j in range(len(i)-1):
if i[j]<i[j+1]:
return False
break
return True
s=0
for i in range(a,b+1):
if dz(i):
s+=1
print(s)