feat(DP): new dp problems formated

decode-ways/src/validator.cpp

@@ -0,0 +1,16 @@
+#include "testlib.h"
+#include <bits/stdc++.h>
+
+using namespace std;
+
+
+int main(int argc, char* argv[]) {
+    registerValidation(argc, argv);
+    int n = inf.readInt(1, 100, "n");
+    inf.readEoln();
+    string s = inf.readToken("[0-9]+");
+    inf.readEoln();
+    inf.readEof();
+    ensuref(n == (int)s.size(), "String 's' should have length %i", n);
+    return 0;
+}