Input: two signed graphs in files sg1_inp.txt,sg2_inp.txt (must be correct)
Format in file for example (of course without comments):

7     /*count vertices*/
0 1 1 /*negative edge 0 1 or 1 0*/
0 2 0 /*positive edge 0 2 or 2 0*/
1 2 0 /*positive edge 1 2 or 2 1*/
5 6 1 /*negative edge 5 6 or 6 5*/

Output: if you type ./main then text messages on screen will be appeared
else if you type ./main 1 then no text message on screen will appeare but
output of the caltulating will be saved to out_main.txt generated file.
