View Compilation Error

0_0_33208759_27167.cpp: In function 'int main()':
0_0_33208759_27167.cpp:20:3: error: expected ';' before 'if'
   if(sum-a[m]+1>=a[m]) cout<<"Yes"<<endl;
   ^
0_0_33208759_27167.cpp:21:3: error: 'else' without a previous 'if'
   else cout<<"No"<<endl;
   ^