[Add] solved solutions

cpp/FLOW013.cpp

@@ -0,0 +1,22 @@
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+    int t, a, b, c, i;
+    cin >> t;
+    for (i = 0; i < t; i++)
+    {
+        cin >> a >> b >> c;
+        if (a + b + c == 180 && a > 0 && b > 0 && c > 0)
+        {
+            cout << "YES" << endl;
+        }
+        else
+        {
+            cout << "NO" << endl;
+        }
+    }
+    return 0;
+}