#include <stdio.h>

int main() {
    int n, oldVal, newVal, found = 0;
    
    scanf("%d", &n);
    int arr[n];
    
    for (int i = 0; i < n; i++) {
        if (scanf("%d", &arr[i]) != 1) {
            printf("Invalid input");
            return 0;
        }
    }
    
    if (scanf("%d %d", &oldVal, &newVal) != 2) {
        printf("Invalid input");
        return 0;
    }
    

    for (int i = 0; i < n; i++) {
        if (arr[i] == oldVal) {
            arr[i] = newVal;
            found = 1;
        }
    }
    
    if (!found) {
        printf("Value not found");
    } else {
        for (int i = 0; i < n; i++) {
            printf("%d", arr[i]);
            if (i < n - 1) {
                printf(" ");
            }
        }
    }
    
    return 0;
}