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- #include <stdio.h>
- #include <stdlib.h>
- int main(){
- int n;
- while(scanf("%d", &n)) {
- if(n >= 10) {
- int pom = n;
- int zigzag = 0;
- int ok = 1;
- while(pom > 0) {
- int cifra = pom % 10;
- pom /= 10;
- if(zigzag == 0) {
- if(cifra >= 5) {
- }
- else {
- ok = 0;
- }
- zigzag = 1;
- }
- else if(zigzag == 1) {
- if(cifra < 5) {
- }
- else {
- ok = 0;
- }
- zigzag = 0;
- }
- }
- pom = n;
- zigzag = 0;
- int ok2 = 1;
- while(pom > 0) {
- int cifra = pom % 10;
- pom /= 10;
- if(zigzag == 0) {
- if(cifra < 5) {
- }
- else {
- ok2 = 0;
- }
- zigzag = 1;
- }
- else if(zigzag == 1) {
- if(cifra >= 5) {
- }
- else {
- ok2 = 0;
- }
- zigzag = 0;
- }
- }
- if(ok == 1 || ok2 == 1) {
- printf("%d\n", n);
- }
- }
- }
- return 0;
- }
- /*
- **/
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