init commit

3sem/cnts/contest2/04.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+enum
+{
+    MY_INT_MAX = ~0u >> (!0),
+    MY_INT_MIN = ~(~0u >> (!0))
+};
+
+int
+satsum(int v1, int v2)
+{
+    int sum;
+    if (!__builtin_add_overflow(v1, v2, &sum)) {
+        return sum;
+    } else if (v1 > 0) {
+        return MY_INT_MAX;
+    } else {
+        return MY_INT_MIN;
+    }
+
+    return 0;
+}