View Compilation Error

0_0_18070378_1899.cpp:2:1: error: '__int64' does not name a type
 __int64 a[N];
 ^
0_0_18070378_1899.cpp: In function 'void ints()':
0_0_18070378_1899.cpp:9:4: error: 'a' was not declared in this scope
    a[j] += i;
    ^
0_0_18070378_1899.cpp:12:7: error: 'a' was not declared in this scope
   if (a[i]<=1000) // 题目范围只需要考虑因子和小于等于1000的
       ^
0_0_18070378_1899.cpp: In function 'int main()':
0_0_18070378_1899.cpp:17:16: error: 'scanf' was not declared in this scope
  scanf("%d", &t);
                ^
0_0_18070378_1899.cpp:21:34: error: 'printf' was not declared in this scope
   printf("%s\n",sum[n]?"no":"yes");
                                  ^