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- #include<iostream>
- using namespace std;
- int dem(int n) {
- if (n < 10) {
- return 1;
- }
- else {
- return 1 + dem(n / 10);
- }
- }
- int nghichdao(int n) {
- if (n < 10) {
- return n;
- }
- else {
- return (n % 10)*(pow(10, dem(n) - 1)) + nghichdao(n / 10);
- }
- }
- bool kiemtra(int n) {
- if (n == nghichdao(n)) {
- return 1;
- }
- else {
- return 0;
- }
- }
- void main() {
- int n;
- cout << kiemtra(123321);
- system("pause");
- }
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