View Compilation Error

0_0_21495701_2074.cpp: In member function 'void Main::read()':
0_0_21495701_2074.cpp:163:9: error: redeclaration of 'int t'
     int t,v;
         ^
0_0_21495701_2074.cpp:162:13: note: 'int t' previously declared here
    for (int t=1;t<=2;++t) {
             ^