diff --git a/solutions/beecrowd/1099/generate_in.sh b/solutions/beecrowd/1099/generate_in.sh
index be00d8e5..d22fbdd6 100755
--- a/solutions/beecrowd/1099/generate_in.sh
+++ b/solutions/beecrowd/1099/generate_in.sh
@@ -4,8 +4,8 @@ set -euo pipefail
 
 TESTCASES=1000
 
-echo "$TESTCASES"
-for _ in $(seq $TESTCASES); do
+echo "${TESTCASES}"
+for _ in $(seq "${TESTCASES}"); do
     if [[ $((RANDOM % 2)) -eq 0 ]]; then
         echo "$((RANDOM % 10000 + 1)) $((RANDOM % 100 + 1))"
     else
diff --git a/solutions/beecrowd/1156/1156.c b/solutions/beecrowd/1156/1156.c
index b9985cf7..6f328e79 100644
--- a/solutions/beecrowd/1156/1156.c
+++ b/solutions/beecrowd/1156/1156.c
@@ -6,7 +6,7 @@ int main() {
     int16_t i;
 
     for (i = 3; i <= 39; i += 2) {
-        s += (double)(i / x);
+        s += i / x;
         x *= 2;
     }