View Compilation Error

0_0_39875817_18326.cpp:33:5: error: expected initializer before 'while'
   33 |     while(scanf("%d%d%d",&n,&m,&s)!=EOF){
      |     ^~~~~
0_0_39875817_18326.cpp:57:5: error: expected unqualified-id before 'return'
   57 |     return 0;
      |     ^~~~~~
0_0_39875817_18326.cpp:58:1: error: expected declaration before '}' token
   58 | }
      | ^