View Compilation Error

0_0_21879470_30746.cpp: In function 'int main()':
0_0_21879470_30746.cpp:96:17: error: redeclaration of 'int flag'
             int flag;
                 ^
0_0_21879470_30746.cpp:90:17: note: 'int flag' previously declared here
             int flag=0;
                 ^