foo.cc: In function 'int main()':
foo.cc:52:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |             M=L+R+1>>1;
      |               ~~~^~
foo.cc:61:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   61 |             M=L+R+1>>1;
      |               ~~~^~

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