View Compilation Error

0_0_35107306_28234.cpp: In function 'LL f1(int)':
0_0_35107306_28234.cpp:23:30: error: expected ';' before ':' token
 LL f1(int i) {return !i -INF : d1(i) + LL(p[i])*p[i];}
                              ^
0_0_35107306_28234.cpp:23:30: error: expected primary-expression before ':' token
0_0_35107306_28234.cpp: In function 'LL f2(int)':
0_0_35107306_28234.cpp:24:30: error: expected ';' before ':' token
 LL f2(int i) {return !i -INF : d2(i) + LL(p[i])*p[i];}
                              ^
0_0_35107306_28234.cpp:24:30: error: expected primary-expression before ':' token