#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");
}这道题我没有事先排序,结果不对。
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