View Compilation Error

0_0_23325229_31437.cpp: In function 'int main()':
0_0_23325229_31437.cpp:4:5: error: expected initializer before 'while'
     while(scanf("%lld%lld", &n, &m) && (m||n)){
     ^
0_0_23325229_31437.cpp:13:1: error: expected '}' at end of input
 }
 ^