UVA 414 Machined Surfaces ( POJ 1493, ZOJ 1339, SCU 1061, UVALive 5389, East Central North America 1995 )

///     Raihan Ruhin
///     CSE, Jahangirnagar University.
///     Dhaka-Bangladesh.
///     id: raihanruhin (topcoder / codeforces / codechef / hackerrank / uva / uvalive / spoj), 3235 (lightoj)
///     mail: raihanruhin@ (yahoo / gmail / facebook)
///     blog: ruhinraihan.blogspot.com

#include<bits/stdc++.h>
using namespace std;

#define SET(a) memset(a,-1,sizeof(a))
#define CLR(a) memset(a,0,sizeof(a))
#define PI acos(-1.0)

#define MOD 1000000007
#define MX 100010


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n, tc, kk=1;
    string s;
    while(cin>>n && n)
    {
        getline(cin, s);
        int tSpace=0, tmpSpace, mnSpace=30;
        for(int i=0;i<n;i++)
        {
            tmpSpace=0;
            getline(cin, s);
            for(int j=0;j<25;j++)
                if(s[j]==' ')
                    tSpace++, tmpSpace++;
            if(tmpSpace<mnSpace) mnSpace=tmpSpace;
        }
        cout<<tSpace-n*mnSpace<<"\n";
    }
return 0;
}