init commit

3sem/cnts/contest5/01.c

@@ -0,0 +1,31 @@
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <string.h>
+
+enum
+{
+    KIBIBYTE = 1024
+};
+
+int
+main(int argc, char *argv[])
+{
+    long long int sum = 0;
+
+    for (int i = 1; i < argc; ++i) {
+        struct stat st;
+
+        if (!(lstat(argv[i], &st) < 0 || st.st_nlink != 1 || !S_ISREG(st.st_mode) || st.st_size % KIBIBYTE != 0)) {
+            sum += st.st_size;
+        }
+    }
+
+    printf("%lld\n", sum);
+
+    return 0;
+}