View Compilation Error

0_0_16232950_1713.cpp:5:24: error: expected unqualified-id before 'int'
  int a[505];int b[505],int c[505];
                        ^
0_0_16232950_1713.cpp:22:4: error: expected primary-expression before 'int'
    int l,n,m;
    ^
0_0_16232950_1713.cpp:22:4: error: expected '}' before 'int'
0_0_16232950_1713.cpp:22:4: error: expected ',' or ';' before 'int'
0_0_16232950_1713.cpp:24:1: error: expected unqualified-id before 'while'
 while(scanf("%d %d %d",&l,&n,&m)!=-1){
 ^