// 2007アジア地区予選A : And Then There Was One
#include <fstream>

using namespace std;

int main(){
	ifstream fin("A.in");
	int n, m, k;
	while(fin >> n >> k >> m, n){
		int stone[10000];
		for(int i=0;i<n;i++) stone[i] = i+1;
		int pos = m-1, size = n;
		while(size != 1){
			for(int i=pos;i<size;i++) stone[i] = stone[i+1];
			size--;
			pos = (pos+k-1)%size;
		}
		printf("%d\n", stone[0]);
	}
}