#include <stdio.h>

int main() {
    int a;
    scanf("%d",&a);
    switch(a)
        {
            case 1:
            printf("jan");
            break;
            case 2:
            printf("feb");
            break;
            case 3:
            printf("march");
            break;
            case 4:
            printf("april");
            break;
            case 5:
            printf("may");
            break;
            case 6:
            printf("june");
            break;
            case 7:
            printf("july");
            break;
            case 8:
            printf("aug");
            break;
            case 9:
            printf("sept");
            break;
            case 10:
            printf("oct");
            break;
            case 11:
            printf("nov");
                break;
            case 12:
            printf("dec");
            break;
            default:
            printf("invalid");
        }
    return 0;
}