View Compilation Error

0_0_30040174_13047.cpp: In function 'int main()':
0_0_30040174_13047.cpp:62:20: error: 'k' was not declared in this scope
     scanf("%d %d",&k,&s);
                    ^
0_0_30040174_13047.cpp:62:23: error: 's' was not declared in this scope
     scanf("%d %d",&k,&s);
                       ^