include <stdio.h>

/* 1 2 3 4 5 6 7 8 9 10 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 1 2 0 0 0 0 1 0 0 1 0 1 3 1 0 0 0 1 0 0 1 0 1

*/ int main() { int rabbit_in[10] = { 0 }; int i; int xnum = 1; int fox_in = 10; do { rabbit_in[fox_in - 1] = 1; xnum++; fox_in -= xnum; } while (fox_in > 0);

for (i = 0; i < 10; i++)
{
    if (!rabbit_in[i])
    {
        printf("%d ", i + 1);
    }
}
printf("\n");
return 0;
copy

}

答案是： 2 3 4 6 7 9

应该是的, 2, 4,7,9