From c2fe814e8a987ce6281f3f7541b7fb9f38449984 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Thu, 29 Oct 2020 21:46:17 +0800
Subject: [PATCH] =?UTF-8?q?[Upd]=20P1206=20[USACO1.2]=E5=9B=9E=E6=96=87?=
 =?UTF-8?q?=E5=B9=B3=E6=96=B9=E6=95=B0=20Palindromic=20Squares?=
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R40787155
---
 problem/P1206/P1206.cpp | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/problem/P1206/P1206.cpp b/problem/P1206/P1206.cpp
index 12daf4c1..4a0e060e 100644
--- a/problem/P1206/P1206.cpp
+++ b/problem/P1206/P1206.cpp
@@ -30,18 +30,12 @@ class node {
         return nums[x];
     }
 
-    const char* c_str() {
+    string str() {
         string s;
         for (int i = len - 1; i >= 0; i--) {
             s.push_back(c(nums[i]));
         }
-        return s.c_str();
-    }
-    string print() {
-        for (int i = len - 1; i >= 0; i--) {
-            cout << c(nums[i]);
-        }
-        return "";
+        return s;
     }
     bool check() {
         for (int i = 0; i < len; i++) {
@@ -59,7 +53,7 @@ int main() {
     for (int i = 1; i <= 300; i++) {
         node t = node(i * i, b);
         if (t.check()) {
-            cout << node(i, b).print() << ' ' << t.print() << endl;
+            cout << node(i, b).str() << ' ' << t.str() << endl;
         }
     }
     return 0;