Time Exceeded
/in/foo.cc: In function 'int main()': /in/foo.cc:22:15: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int l=1,r=n,ans; ^~~
/in/foo.cc: In function 'int main()': /in/foo.cc:22:15: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int l=1,r=n,ans; ^~~