#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main() {
    char S[105];
    scanf("%s", S);

    int len = strlen(S);

    // Condition 1: Length check
    if (len < 1 || len > 32) {
        printf("400\n");
        return 0;
    }

    // Condition 3: First and last character check
    if (S[0] == '_' || S[0] == '-' || S[len - 1] == '_' || S[len - 1] == '-') {
        printf("400\n");
        return 0;
    }

    // Condition 2: Allowed characters check
    for (int i = 0; i < len; i++) {
        if (!(isalnum(S[i]) || S[i] == '_' || S[i] == '-')) {
            printf("400\n");
            return 0;
        }
    }

    // If all conditions pass
    printf("200\n");

    return 0;
}