UVa 400

一开始没怎么看懂题目，原来就是M字符就是这一列的宽度为M个字符，包括空格。

 #include<iostream>
 #include<algorithm>
 #include<string>
 using namespace std;

 int main()
 {
     string filename[];
     int n;
     while (cin >> n)
     {
         int cols, rows;
         int M = ;
         for (int i = ; i < n; i++)
         {
             cin >> filename[i];
             M = max(M, (int)filename[i].length());
         }
         cols = ( - M) / (M + ) + ;
         rows = (n - ) / cols + ;
         sort(filename, filename + n);
         for (int i = ; i <= ; i++)
             cout << "-";
         cout << endl;
         for (int i = ; i < rows; i++)
         {
             for (int j = ; j < cols; j++)
             {
                 int t = j * rows + i;
                 if (t>=n)
                     continue;
                 cout << filename[t];
                 for (int k = ; k <= M - filename[t].length();k++)
                 {
                     cout << " ";
                 }
                 if (j < cols - )
                     cout << "  ";
             }
             cout << endl;
         }
     }
     return ;
 }