View Compilation Error

0_0_25909332_8421.cpp: In function 'int main()':
0_0_25909332_8421.cpp:48:20: error: 'scanf' was not declared in this scope
     scanf("%lld",&T);
                    ^
0_0_25909332_8421.cpp:59:24: error: 'assert' was not declared in this scope
         assert(shiji>=0);
                        ^
0_0_25909332_8421.cpp:60:30: error: 'printf' was not declared in this scope
         printf("%lld\n",shiji);
                              ^