#include <stdio.h>

int main(void) {

    char massiv[100];
    char n;
    char head_count = 0;
    char tail_count = 0;
    FILE *input_file = fopen("INPUT.TXT", "r");

    fscanf(input_file, "%hhi", &n);

    for (int i = 0; i < n; ++i) {
        fscanf(input_file, "%hhd", massiv + i);

    }

    fclose(input_file);


    for (int i = 0; i < n; ++i) {
        if (massiv[i] == 1) {
            head_count++;
        } else {
            tail_count++;
        }

    }

    FILE *output_file = fopen("OUTPUT.TXT", "w");

    if (head_count > tail_count) {
        fprintf(output_file, "%d", tail_count);
    } else {
        fprintf(output_file, "%d", head_count);
    }

    fclose(output_file);

    return 0;
}