diff --git a/CodeForces/31-A.cpp b/CodeForces/31-A.cpp
new file mode 100644
index 0000000..91c1f2b
--- /dev/null
+++ b/CodeForces/31-A.cpp
@@ -0,0 +1,40 @@
+#include <cstdio>
+
+using namespace std;
+
+int main()
+{
+    int n, a[101];
+    scanf("%d", &n);
+    for (int i = 1; i <= n; ++i)
+    {
+        scanf("%d", &a[i]);
+    }
+
+    bool found = false;
+    for (int i = 1; !found && i <= n; ++i)
+    {
+        for (int j = 1; !found && j <= n; ++j)
+        {
+            if (j != i)
+            {
+                for (int k = j + 1; k <= n; ++k)
+                {
+                    if (k != i && a[i] == a[j] + a[k])
+                    {
+                        printf("%d %d %d\n", i, j, k);
+                        found = true;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    if (!found)
+    {
+        printf("-1\n");
+    }
+
+    return 0;
+}