/in/foo.cc: In function 'int main()':
/in/foo.cc:10:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k;
          ^
/in/foo.cc:63:12: warning: 'min3' may be used uninitialized in this function [-Wmaybe-uninitialized]
   a[min3]+=minminmin;
            ^~~~~~~~~
/in/foo.cc:65:10: warning: 'min2' may be used uninitialized in this function [-Wmaybe-uninitialized]
   a[min2]=0;
   ~~~~~~~^~
/in/foo.cc:38:4: warning: 'min1' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(j==min1)
    ^~