#include<stdio.h> #include?<string.h> int?main(){ ?int?n,m;?//n?is?number?of?heads.m?is?number?of??knights.? ?while(scanf("%d?%d",&n,&m)==2&&!(n==0&&m==0)){ ???if(n>=1&&n<=20000&&m>=1&&n<=20000&&n<=m){??? ???int?headSize[n];??? ???int?knightAbility[m];??? ???int?i,j;??? ???for(i=0;i<n;i++){???? ???scanf("%d\n",&headSize[i]);??? ???}?????? ???for(i=0;i<m;i++){???? ???scanf("%d\n",&knightAbility[i]);??? ???}?????? ???int?sum=0;??? ???for(i=0;i<n;i++){???? ???int?min=999999;???? ???for(j=0;j<m;j++){????? ???if(knightAbility[j]>=headSize[i]&&knightAbility[j]<min){?????? ???min=knightAbility[j];????? ???}????? ???sum+=min; ???}??? ???}??? ???printf("%d\n",sum);? ???}?? ???else??? ???printf("loowater?is?doomed."); }???//printf("end?of?pro"); }這道題我沒有事先排序，結果不對。