View Compilation Error

0_0_14528737_27465.cpp: In function 'int main()':
0_0_14528737_27465.cpp:122:13: error: redeclaration of 'int flag'
         int flag=0;
             ^
0_0_14528737_27465.cpp:120:13: note: 'int flag' previously declared here
         int flag=0;
             ^
0_0_14528737_27465.cpp:125:16: error: 'k' was not declared in this scope
             if(k[i]!=0)
                ^