diff --git a/cv3/program.c b/cv3/program.c
index 6c3313e..c386dbd 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -47,11 +47,11 @@ int main() {
     while (fgets(bufer, sizeof(bufer), stdin) != NULL) {
         char* konec;
         double chislo = strtod(bufer, &konec);
+        char c = konec[0];
 
-        if (*konec == '\n' && *bufer != '\n' && *bufer != ' ') {
+        if (c == '\n' && *bufer != '\n' && *bufer != ' ') {
             push(&stek, chislo);
-        } else if (strcmp(konec, "+\n") == 0) {
-
+        } else if (c == '+') {
             if (isEmpty(&stek)) {
                 printf("no input\n");
                 exit(1);
@@ -63,7 +63,7 @@ int main() {
             }
             double a = pop(&stek);
             push(&stek, a + b);
-        } else if (strcmp(konec, "-\n") == 0) {
+        } else if (c == '-') {
             if (isEmpty(&stek)) {
                 printf("no input\n");
                 exit(1);
@@ -75,7 +75,7 @@ int main() {
             }
             double a = pop(&stek);
             push(&stek, a - b);
-        } else if (strcmp(konec, "*\n") == 0) {
+        } else if (c == '*') {
             if (isEmpty(&stek)) {
                 printf("no input\n");
                 exit(1);
@@ -87,7 +87,7 @@ int main() {
             }
             double a = pop(&stek);
             push(&stek, a * b);
-        } else if (strcmp(konec, "/\n") == 0) {
+        } else if (c == '/') {
             if (isEmpty(&stek)) {
                 printf("no input\n");
                 exit(1);
@@ -97,21 +97,18 @@ int main() {
                 printf("no input\n");
                 exit(1);
             }
-
             double a = pop(&stek);
             if (b == 0) {
                 printf("division by zero\n");
                 return 0;
-                exit(1);
             }
             push(&stek, a / b);
-        } else if (isalpha(konec[-1])) {
+        } else if (isalpha(c)) {
             printf("bad input\n");
-            exit(1);
             return 0;
         } else {
-            printf("bad input\n");
-            exit(1);
+            printf("no input\n");
+            return 0;
         }
         for (int i = 0; i < stek.vershina; i++) {
             printf("%.2lf ", stek.chisla[i]);