diff --git a/src/algorithm.c b/src/algorithm.c
index 8bf800b..a0d964d 100644
--- a/src/algorithm.c
+++ b/src/algorithm.c
@@ -768,6 +768,13 @@ bool is_overlap_creneau(creneau* edt, int len_edt, int id, int grp) { // detect
         }
         k++;
     }
+    k = 1;
+    while(id-k >= 0 && is_equal_date(edt[id].date, edt[id-k].date)) {
+        if(edt[id+k].group == grp) {
+            return true;
+        }
+        k++;
+    }
     return false;
 }
 
@@ -819,7 +826,7 @@ void add_colles_for_group_MP2I(int* weeks_len, creneau* edt, int len_edt, colleu
         weeklen = weeks_len[week];
         // update what colles to add
         if(math == 0) {
-            math = 3;
+            math = 2;
         } else {
             remaining_to_add++;
             math--;
@@ -870,7 +877,7 @@ void add_colles_for_group_MP2I(int* weeks_len, creneau* edt, int len_edt, colleu
             }
             if(!found && halt > weeklen) {
                 info = 0;
-                //printf("Warning : skipping info colle for week %d and group %d\n", week+1, grp);
+                printf("Warning : skipping info colle for week %d and group %d\n", week+1, grp);
                 *skip_count += 1;
             }
             r++;
@@ -949,6 +956,7 @@ void add_colles_for_group_MP2I(int* weeks_len, creneau* edt, int len_edt, colleu
                         if(dudes[perm[dude]].mat == rotation) {
                             add_colle(edt, dudes, grp, k+r%weeklen, perm[dude]);
                             if(math_dude > free_math_space(edt, len_edt, k+r%weeklen) || is_overlap(edt, len_edt, k+r%weeklen)) {
+                            //if(math_dude > free_math_space(edt, len_edt, k+r%weeklen)) {
                                 remove_colle(edt, k+r%weeklen);
                             } else {
                                 found = true;
@@ -1096,7 +1104,7 @@ void aux_2(creneau* edt, int len_edt, colleur* chads, int len_chads, int n_group
         //for(int i = 0; i < 1; i++) {
             //rintf("Adding colles for group %d...\n", i+1);
             //add_colles_for_group_MP2I(weeks_len, edt, len_edt, chads, len_chads, n_weeks, i+1, (topic)(2+i%2), i%4, i%6, &skipped);
-            add_colles_for_group_MP2I(weeks_len, edt, len_edt, chads, len_chads, n_weeks, i+1, (topic)(2+i%2), i%4, -20, &skipped);
+            add_colles_for_group_MP2I(weeks_len, edt, len_edt, chads, len_chads, n_weeks, i+1, (topic)(2+i%2), i%3, -20, &skipped);
         }
         for(int i = 0; i < n_groups; i++) {
             //printf("Score for group %d : %d\n", i+1, score(edt, len_edt, i+1));
diff --git a/src/main.c b/src/main.c
index 5363ca8..5aaed42 100644
--- a/src/main.c
+++ b/src/main.c
@@ -112,7 +112,7 @@ int main(int argc, char **argv) {
     //colleur* dudes = import_colleurs("some_data.txt", 13, len_creneau);
     colleur* dudes = import_colleurs_oneweek(path_colleurs, n_colleurs, n_weeks, n_creneaux);
 
-    aux_2(edt, len_edt, dudes, n_colleurs, n_groups, n_weeks, 5000, path_output);
+    aux_2(edt, len_edt, dudes, n_colleurs, n_groups, n_weeks, 2500, path_output);
 
     for(int i = 0; i < len_edt; i++) {
         free(edt[i].name);