View Compilation Error

0_0_30236989_702.cpp: In function 'int main()':
0_0_30236989_702.cpp:52:26: error: expected ')' before ';' token
         for(__int128 i=(1;i<=n;i--) if(i*i*i<=n&&(i+1)*(i+1)*(i+1)>n){r=i;break;}
                          ^