diff --git a/zeta_C/completed/16439.c b/zeta_C/completed/16439.c
new file mode 100644
index 0000000..0eac7ec
--- /dev/null
+++ b/zeta_C/completed/16439.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int max3(int x, int y, int z) {
+    if (x > y)
+        if (x > z)
+            return x;
+        else
+            return z;
+    else if (y > z)
+        return y;
+    else
+        return z;
+}
+
+int comp(const void *a, const void *b) {
+    return (*(int *) b - *(int *) a);
+}
+
+int main() {
+    int N, M, temp = 0;
+    scanf("%d %d", &N, &M);
+    int *scores = (int *) calloc(N * M, sizeof(int));
+    int *maxes = (int *) calloc(M * M * M, sizeof(int));
+    for (int i = 0; i < N; i++) {
+        for (int j = 0; j < M; j++) {
+            scanf("%d", scores + M * i + j);
+        }
+    }
+    for (int i = 0; i < M; i++) {
+        for (int j = 0; j < M; j++) {
+            if (j == i) continue;
+            for (int k = 0; k < M; k++) {
+                if (k == j || k == i) continue;
+                temp = 0;
+                for (int n = 0; n < N; n++) {
+                    temp += max3(scores[M * n + i], scores[M * n + j], scores[M * n + k]);
+                }
+                maxes[M * M * i + M * j + k] = temp;
+            }
+        }
+    }
+
+    qsort(maxes, M * M * M, sizeof(int), comp);
+
+    printf("%d", maxes[0]);
+    free(scores);
+    free(maxes);
+
+    return 0;
+}
\ No newline at end of file