Create 1716B-PermutationChain.cpp

Author: DionysiosB

1716B-PermutationChain.cpp

@@ -0,0 +1,20 @@
+#include <cstdio>
+#include <vector>
+
+int main(){
+
+    long t; scanf("%ld", &t);
+    while(t--){
+        long n; scanf("%ld", &n);
+        std::vector<long> a(n); for(long p = 0; p < n; p++){a[p] = p + 1;}
+        printf("%ld\n", n);
+        for(long p = 0; p < n; p++){printf("%ld ", a[p]);}; puts("");
+        for(long p = 1; p < n; p++){
+            long tmp = a[p]; a[p] = a[p - 1]; a[p - 1] = tmp;
+            for(long p = 0; p < n; p++){printf("%ld ", a[p]);}
+            puts("");
+        }
+
+    }
+
+}