题解 | #统计每个月兔子的总数#

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

int main(void) { int n = 0; int count[4] = {0}; int i = 0; int temp = 0; while(scanf("%d", &n) != EOF) { count[0] = 1; count[1] = 0; count[2] = 0; count[3] = 0; for(i = 1; i < n; i++) {

        count[2] += count[1];
        count[1] = count[0];
        count[0] = count[2];
    }

    printf("%d\n",count[0] + count[1] + count[2] );
    
}

return 0;

}