3

#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
    for (int i = 1; i < argc; ++i) {
        char *num_end;
        errno = 0;
        long num = strtol(argv[i], &num_end, 10);
        if (errno == ERANGE) {
            printf("%d\n", -1);
            continue;
        }
        if (*num_end == 0 && num_end != argv[i]) {
            if ((int8_t)num == num) {
                printf("%d\n", 1);
            } else if ((int16_t)num == num) {
                printf("%d\n", 2);
            } else if ((int32_t)num == num) {
                printf("%d\n", 4);
            } else {
                printf("%d\n", -1);
            }
        } else {
            printf("%d\n", -1);
        }
    }
}