挺水的是吧?

　　是啊,挺水的.

　　挺水的比赛怎么没过?

　　宝宝心里苦啊,当时光顾着看n的范围了,没看清数的范围也不过5000,T T,好崩溃啊T T

#include
     
      #include
      
       #include
       
        #include
        
         using namespace std;int res[100010],a[3010],End[1010];int main(){    int n,m;    while(~scanf("%d%d",&n,&m))    {        for(int i = 0;i < n;i++)        scanf("%d",&a[i]);        sort(a,a + n);        memset(res,0,sizeof(res));        int max = 0,all = m;        for(int j = n-1;j > 0;j--)        {            for(int i = j-1;i >= 0;i--)            {                int num = a[i] + a[j];                res[num]++;                if(num > max)                max = num;            }        }        int tot = 0;        for(int i = max;i >= 0;i--)        {            if(res[i] != 0 && res[i] <= all)            {                while(res[i])                {                     End[tot++] = i;                     res[i]--;                }                all -= res[i];            }            else if(res[i] != 0 && res[i] > all)            {                while(res[i])                {                    End[tot++] = i;                    res[i]--;                }                break;            }        }        for(int i = 0;i < m;i++)        {            if(i == 0)printf("%d",End[i]);            else printf(" %d",End[i]);        }        printf("\n");    }    return 0;}