View Compilation Error

0_0_31563585_16860.cpp: In function 'int main()':
0_0_31563585_16860.cpp:141:13: error: 'itn' was not declared in this scope
         for(itn i = 1;i <= m;i++){
             ^
0_0_31563585_16860.cpp:141:23: error: 'i' was not declared in this scope
         for(itn i = 1;i <= m;i++){
                       ^