diff --git a/dm2/dm2.c b/dm2/dm2.c
index 3c09b35..6559b86 100644
--- a/dm2/dm2.c
+++ b/dm2/dm2.c
@@ -1,4 +1,5 @@
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -33,7 +34,8 @@ int ecartmin(int t[], int size) {
 
 // Returns 0 if no integer has been detected
 int extraire(char str[]) {
-    while (*str != '-' && (*str <= '0' || *str >= '9')) {
+    while ((*str != '-' || (str[1] <= '0' || str[1] >= '9')) &&
+           (*str <= '0' || *str >= '9')) {
         if (*str == 0) {
             return 0;
         }
@@ -72,15 +74,15 @@ double sommemajo(double t[], int size) {
 
 // Only works with ASCII
 int nbdiff(char str[]) {
-    int chars[126] = {0};
+    bool chars[126] = {false};
     while (*str) {
-        chars[*str - 1] += 1;
+        chars[*str - 1] = true;
         str += 1;
     }
     int count = 0;
     char c = 1;
     while (c < 126) {
-        count += chars[c] > 0;
+        count += chars[c];
         c += 1;
     }
     return count;
@@ -117,7 +119,8 @@ bool palindrome2(char str[]) {
 int sommeentiers(char str[]) {
     int count = 0;
     while (true) {
-        while (*str != '-' && (*str <= '0' || *str >= '9')) {
+        while ((*str != '-' || (str[1] <= '0' || str[1] >= '9')) &&
+               (*str <= '0' || *str >= '9')) {
             if (*str == 0) {
                 return count;
             }