#includeint main(void) { int m,k; scanf("%d %d",&m,&k); int day=0; int pay=0; while(m!=0) { m--; pay++; day++; if(pay%k==0) { m++; } } printf("%d",day); return 0; }

#includeint main(void) { int m,k; scanf("%d %d",&m,&k); int day=0; int pay=0; while(m!=0) { m--; pay++; day++; if(pay%k==0) { m++; } } printf("%d",day); return 0; }