foo.cc: In function 'int main()':
foo.cc:42:4: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 |    if(s2[j]<y&&n==1)
      |    ^~
foo.cc:22:4: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   22 |    if(s1[i]<x&&m==1)
      |    ^~

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