joseph.c

#include <stdio.h>

int main() {
  int m, n;
  scanf("%d%d", &m, &n);
  int p[m], j = m - 1;
  for(int i = 0; i < m - 1; i++) p[i] = i + 1;
  p[m - 1] = 0;
  while(p[j] != j) {
    for(int i = 0; i < n - 1; i++) j = p[j];
    p[j] = p[p[j]];
  }
  printf("%d\n", j);
}