bac 4/19/2022 5

#include <iostream>
#include <string.h>
using namespace std;
char s[100], aux[100];

int main() {
    gets(s);
    char *p = strtok(s, " ");
    bool ok = false;
    while (p) {
        if (strlen(p) % 2) {
            strcat(aux, strrev(p));
            ok = true;
        } else {
            strcat(aux, p);
        }
        strcat(aux, " ");
        p = strtok(NULL, " ");
    }
    if (!ok) {
        puts("nu exista");
    } else {
        aux[strlen(aux) - 1] = '\0';
        strcpy(s, aux);
        puts(s);
    }
    return 0;
}