2073: [POI2004]PRZ
Time Limit: 10 Sec Memory Limit: 64 MB
Submit: 329 Solved: 248
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Description
Input
Output
Sample Input
24 60
10 40
18 50
Sample Output
42
#include<iostream>
#include<cstdlib>
#include<cstdio>
#include<cstring>
using namespace std;
int tim[1<<17],wei[1<<17],f[1<<17];
int n,w,v[405],we[405],all;
int main (){
memset(f,100,sizeof(f));
scanf ("%d%d",&w,&n);
for (int i=1;i<=n;++i)
scanf ("%d%d",&v[i],&we[i]);
all=(1<<n)-1;
for (int i=1;i<=all;++i)
for (int j=1;j<=n;++j)
if ((i&(1<<(j-1)))){
tim[i]=max(tim[i],v[j]);
wei[i]+=we[j];
}
f[0]=0;
for (int i=1;i<=all;++i)
for (int j=i;j;j=i&(j-1))
if (wei[j]<=w)f[i]=min(f[i],tim[j]+f[i^j]);
printf ("%d",f[all]);
return 0;
}