fix counting

main.c

@@ -80,7 +80,7 @@ void finish(int last_lc, unsigned last_rcol_idx) {
 
   for (; last_rcol_idx < num_rcol; last_rcol_idx++) {
     put(2);
-    rcol_ctr[last_rcol_idx - 1].pfs[2] += 1;
+    rcol_ctr[last_rcol_idx].pfs[2] += 1;
   }
 }
 
@@ -156,6 +156,7 @@ int main(int argc, char **argv) {
 
     for (i = last_rcol_idx + 1; i < rcol_idx; i++) {
       put(2);
+      rcol_ctr[i - 1].pfs[2]++;
     }
 
     put(pfs_mode);