View Compilation Error

0_0_36407309_10844.cpp: In function 'int main()':
0_0_36407309_10844.cpp:18:26: error: expected ';' before '}' token
             if(u-f<0){u=0};
                          ^
0_0_36407309_10844.cpp:19:13: error: 'else' without a previous 'if'
             else {u-=f;}
             ^