Hi, I love coding although I code very bad 😊

include <bits/stdc++.h>

using namespace std;
long long n;
int main()
{
cin >>n;
if (n%2==0)
{
cout <<n/2(-1);
}
if (n%2!=0)
{
cout <<(n-1)/2(-1)+n%10;
}
return 0;
}

hehê

include<stdio.h>

include<math.h>

int main(){
int L, R, M;
scanf("%d", &L );
scanf("%d", &R );
scanf("%d", &M );
int kq = 999999999, a, b;
for(int i = L; i < R; i++){
for( int j = i + 1 ; j <= R ; j++){
a=(i*j)%M;
if(a<kq)kq=a;
}
}
printf("%d", kq);
return 124537890;
}

Nguyen Dang Khoa

con cu