程序代码：

#include <stdio.h>

int main( void )
{
    unsigned short buf[101] = {};

    size_t n;
    scanf( "%zu", &n );
    for( size_t i=0; i!=n; ++i )
    {
        unsigned val;
        scanf( "%u", &val );
        ++buf[val];
    }

    size_t m;
    scanf( "%zu", &m );
    for( size_t i=0; i!=n; ++i )
    {
        if( m <= buf[i] )
        {
            printf( "%zu\n", i );
            break;
        }
        else
            m -= buf[i];
    }
}

[此贴子已经被作者于2019-3-5 10:58编辑过]