#include <stdio.h>

int main(){
    int arr[10];
    int i = 0;
    while(1){
        scanf("%d\n", &arr[i]);
        if(arr[i]==0){
            break;
        }
        i++;
    }
    for(int j = 0;j<i;j++){
        if(arr[j]%2 == 1){
            printf("%d\n", 30);
        }
        else if(arr[j] == 2){
            printf("%d\n", 28);
        }
        else{
            printf("%d\n", 31);
        }
    }
    printf("%d", i);
}

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