00414 Machined Surfaces.cpp

#include <cstdio>
#include <cmath>
#include <cstring>
#include <cctype>
#include <iostream>
#include <algorithm>
#include <bitset>
#include <numeric>
#include <stack>
#include <queue>
#include <vector>
#include <map>
#include <set>
#include <limits>
#include <sstream>
#include <string>
#include <regex>
#define iter(a,b,c,d) for(a = b; a < c; a+=d)
#define ited(a,b,c,d) for(a = b; a > c; a-=d)
#define li long int
#define uli unsigned li
#define ll long li
#define ull unsigned ll
#define si(a) scanf("%d",&a)
#define sli(a) scanf("%ld",&a)
#define sll(a) scanf("%lld",&a)
#define slu(a) scanf("%llu",&a)
#define sf(a) scanf("%f",&a)
#define slf(a) scanf("%lf",&a)
#define PI 3.1415926
using namespace std;
int main()
{
//    freopen("1in.txt", "r", stdin);
//    freopen("1out.txt", "w", stdout);
    int n,temp,mi;
    string s;
    vector<int> spaces;
    while(cin >> n, n)
    {
        cin.ignore();
        spaces.clear();
        mi = 99;
        while(n--)
        {
            getline(cin,s);
            temp = 0;
            for(auto it = s.begin(); it != s.end(); ++it)
                if(*it != 'X') ++temp;
            spaces.push_back(temp);
            mi = min(temp,mi);
        }
        temp = accumulate(spaces.begin(),spaces.end(),0) - (mi * spaces.size());
        cout << temp << endl;
    }
    return 0;
}