View Compilation Error

0_0_35963057_3412.cpp: In function 'int main()':
0_0_35963057_3412.cpp:47:48: error: cannot convert 'bool' to 'const char*' for argument '1' to 'int scanf(const char*, ...)'
     while(scanf(scanf("%d%d%d",&len,&n,&m)!=EOF))
                                                ^