diff --git a/files/devis.txt b/files/devis.txt
new file mode 100644
index 0000000..9d9c56f
--- /dev/null
+++ b/files/devis.txt
@@ -0,0 +1,50 @@
+Plomberie 
+Pros De L’eau 
+12, Av. la république – 63000 – Clermont-Ferrand
+500000
+35
+25000
+Electricité
+Electro Maître
+50, zone industrielle sud – 15000 – Aurillac
+450000
+60
+42000
+Plomberie
+DolcéAqua
+33, zone Industriel Aubière – 63170 – Aubière
+450000
+40
+27000
+Sols
+comusolisme
+20, Boulevard Desaix – 63000 – Clermont-Ferrand
+70000
+10
+10000
+Structure 
+Eiffage Construction Auvergne
+300000
+40
+20000
+Peinture 
+Pingeon et Fils
+52, Boulevard Lafayette – 63000 – Clermont-Ferrand
+5000
+6
+4000
+Fondation
+Léon Grosse
+5, Rue Louis Blériot – 63000 – Clermont-Ferrand
+60000
+42
+7000
+Murs
+illiCO travaux
+37, bis Avenue Marx Dormoy – 63000 – Clermont-Ferrand
+Finitions 
+SGP finition
+4, Rue de Chignat – 63000 – Clermont-Ferrand
+100
+10
+5000
diff --git a/files/précédences.txt b/files/précédences.txt
new file mode 100644
index 0000000..56cf03a
--- /dev/null
+++ b/files/précédences.txt
@@ -0,0 +1,10 @@
+Fondation	Structure
+Structure	Electricite
+Structure	Plomberie
+Plomberie	Murs
+Electricite	Menuiserie
+Plomberie	Sols
+Murs		Peinture
+Peinture	Finitions
+Sols		Finitions
+
diff --git a/srcs/atomes.c b/srcs/atomes.c
new file mode 100644
index 0000000..1a56f93
--- /dev/null
+++ b/srcs/atomes.c
@@ -0,0 +1,86 @@
+#include "../includes/"
+
+void	fusion(int R[], int tR, int S[], int tS, int T[])
+{
+	int	i;
+	int	j;
+	int	k;
+	int	tlog;
+
+	i = 0;
+	j = 0;
+	tlog = tR + tS;
+	while (i < tR && j <= tS)
+	{
+		if (R[i] < S[j])
+		{
+			T[k] = R[i];
+			i++;
+		}
+		else 
+		{
+			T[k] = S[j];
+			j++;
+		}
+		k++;
+	}
+	while (i < tR)
+	{
+		T[k] = R[i];
+		i++;
+		k++;
+	}
+	while (j < tS)
+	{
+		T[k] = S[j];
+		j++;
+		k++;
+	}
+}
+
+void	copy(int T[], int i, int j, int R[])
+{
+	int	k;
+
+	k = 0;
+	while (i < j)
+	{
+		R[k] = T[i];
+		i++;
+		k++;
+	}
+}
+
+void	triFusion(int T[], int tlog)
+{
+	int	*R;
+	int	*S;
+
+	if (tlog == 1)
+		return;
+	R = (int *)malloc(sizeof (int) * (tlog / 2));
+	S = (int *)malloc(sizeof (int) * tlog - tlog/2);
+	if (!R || !S)
+		exit (1);
+	copy	(T, 0, tlog/2, R);
+	copy	(T, tlog/2, tlog, S);
+	triFusion (R, tlog/2);
+	triFusion (S, tlog - tlog/2);
+	fusion	(R, tlog/2, S, tlog - tlog/2, T);
+	free	(R);
+	free	(S);
+}
+
+
+int	main (void)
+{
+	int	tab[10] = {10, 0, 2, 15, 7, 5 ,68, 1, 7 ,8};
+	int	tlog = 10;
+	int	i = 0;
+
+	triFusion(tab, tlog);
+	while (i < tlog)
+		printf ("%d : ", tab[i++]);
+	printf ("\n");
+	return (0);
+}