./Main.c:2:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
a[100],s,d[100];
^
./Main.c:2:8: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
a[100],s,d[100];
~ ^
./Main.c:2:10: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
a[100],s,d[100];
~ ^
./Main.c:3:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
f(q){if(q == 0)return a[0];if(d[q]!=0)return d[q];return d[q] = f(q-1)*2 + a[q];}
^
./Main.c:4:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
main(i){for(scanf("%d",&i);s < i;s++)scanf("%d", a+s);printf("%d",f(i-1));puts("");}
^~~~
./Main.c:4:1: warning: only one parameter on 'main' declaration [-Wmain]
./Main.c:4:13: warning: implicitly declaring library function 'scanf' with type 'int (const char *restrict, ...)'
main(i){for(scanf("%d",&i);s < i;s++)scanf("%d", a+s);printf("%d",f(i-1));puts("");}
^
./Main.c:4:13: note: please include the header <stdio.h> or explicitly provide a...