运行 ID: 130124

Main.cc: In function ‘int main()’:
Main.cc:7:12: warning: right operand of comma operator has no effect [-Wunused-value]
   for(i=4,i<=n;i++){
           ~^~~
Main.cc:7:19: error: expected ‘;’ before ‘)’ token
   for(i=4,i<=n;i++){
                   ^
Main.cc:8:21: error: invalid types ‘long long unsigned int [100][long long unsigned int*]’ for array subscript
    a[i]=a[i-3]+a[a-2]+a[i-1];
                     ^