View Compilation Error

0_0_36161423_17178.c:2:1: error: unknown type name 'll'
 ll a[1000005];
 ^
0_0_36161423_17178.c: In function 'main':
0_0_36161423_17178.c:7:45: error: 'EOF' undeclared (first use in this function)
     while(scanf("%d%d%d%d",&p1,&p2,&p3,&x)!=EOF){
                                             ^
0_0_36161423_17178.c:7:45: note: each undeclared identifier is reported only once for each function it appears in
0_0_36161423_17178.c:14:13: error: unknown type name 'll'
             ll temp;
             ^
0_0_36161423_17178.c:15:13: error: unknown type name 'll'
             ll ans=INF;
             ^
0_0_36161423_17178.c:15:20: error: 'INF' undeclared (first use in this function)
             ll ans=INF;
                    ^
0_0_36161423_17178.c:16:18: error: 'i' undeclared (first use in this function)
             rep2(i,cn,1){
                  ^
0_0_36161423_17178.c:16:25: error: expected ';' before '{' token
             rep2(i,cn,1){
                         ^