#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main(int argc, char * argv[]) {
	if (argc < 3) {
		puts("Veuillez renseigner deux valeurs ou plus.");
		return EXIT_FAILURE;
	}

	double* list = (double*) calloc(argc-1, sizeof(double));

	for (int i = 0; i < argc-1; i++) {
		double val = strtod(argv[i+1], NULL);
		int found = 0;

		for (int j = 0; j < i; j++) {
			if (list[j] == val) found = 1;
		}

		if (!found) {
			list[i] = val;
			printf("%.2f ", val);
		}
	}

	free(list);
	printf("\n");

	return EXIT_SUCCESS;
}