View Compilation Error

0_0_30451528_2545.cpp: In function 'int main()':
0_0_30451528_2545.cpp:127:18: error: 'ans' was not declared in this scope
                  ans=min(ans,seg_to_seg(line[i],line[j]));
                  ^
0_0_30451528_2545.cpp:127:41: error: 'line' was not declared in this scope
                  ans=min(ans,seg_to_seg(line[i],line[j]));
                                         ^