#include<bits/stdc++.h> using namespace std; int main(){ int a=0,b=1000,c,d,e,f; while(b<10000){ c=b%10; d=b/10%10; e=b/100%10; f=b/1000; if(c==f&&d==e){ a++; } b++; } cout<<a; } /************************************************************** Problem: 1447 User: lvrenxiang Language: C++ Result: Wrong Answer ****************************************************************/