foo.cc: In function 'void build(int, int, int)':
foo.cc:106:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  106 |                 int mid=L+R>>1;
      |                         ~^~
foo.cc: In function 'void modify_sum(int, int, int, int, __int128)':
foo.cc:120:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  120 |                 int mid=L+R>>1;
      |                         ~^~
foo.cc: In function 'void modify_ssum(int, int, int, int, int, __int128)':
foo.cc:141:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  141 |                 int mid=L+R>>1;
      |                         ~^~
foo.cc: In function 'void modify_asum(int, int, int, int, int, int)':
foo.cc:165:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  165 |                 int mid=L+R>>1;
      |                         ~^~
foo.cc: In function '__int128 query(int, int, int, int)':
foo.cc:188:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  188 |                 int mid=L+R>>1;
      |                         ~^~

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