View Compilation Error

0_0_38769462_20510.cpp: In function 'int main()':
0_0_38769462_20510.cpp:5:9: error: 'scanf' was not declared in this scope
    5 |         scanf("%d", &T);
      |         ^~~~~
0_0_38769462_20510.cpp:7:17: error: 'Solve' was not declared in this scope
    7 |                 Solve();
      |                 ^~~~~