foo.cc: In function 'void Build(long long int, long long int, long long int)':
foo.cc:98:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=ll+rr>>1;
             ~~^~~
foo.cc: In function 'Ans Query(long long int, long long int, long long int)':
foo.cc:113:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=T[k].l+T[k].r>>1;
             ~~~~~~^~~~~~~
foo.cc: In function 'void IntervalAdd(long long int, long long int, long long int, long long int, long long int)':
foo.cc:148:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=T[k].l+T[k].r>>1;
             ~~~~~~^~~~~~~
foo.cc: In function 'void IntervalMemset(long long int, long long int, long long int)':
foo.cc:167:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=T[k].l+T[k].r>>1;
             ~~~~~~^~~~~~~
foo.cc: At global scope:
foo.cc:172:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

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