T12/2021 BAC

1c 2a 3d 4b 5c
II 1 a 2 2 4 4 9

2b 19,23

III 1.
#include <iostream>

using namespace std;

void frate(int x, int& y)
{
    int c, p = 1;
    y = 0;
    while( x != 0 ){
        c = x%10;
        if( c == 9 ){
            y = -1;
            return;
        }
        y = (c+1) * p + y;
        p *= 10;
        x /= 10;
    }
}

int main()
{
    int x, y;
    cin >> x;
    frate(x, y);
    cout << y;
}


for(i=0;i<strlen(s);i++)
if(strchr("OAU",s[i])!=NULL) cout<<"*";
else cout<<s[i];

III 2.
x=a[k][n-k];
for(j=n-k-1;j>=1;j--){
    a[k][j+1]=a[k][j];
}
a[k][1]=x;