緇欏畾涓瀹氭暟閲忕殑涓嶅悓闈㈠肩殑閽炵エ錛岃緭鍑虹敱榪欎簺閽炵エ緇勬垚鐨勪笉瓚呰繃鍑烘涓婇檺錛堥鐩腑鐨刢ash錛夌殑鏈澶ч噾棰濄?br />01鑳屽寘闂錛岃鍙傞槄錛?a href="http://www.shnenglu.com/hoolee/archive/2012/08/14/187179.html">http://www.shnenglu.com/hoolee/archive/2012/08/14/187179.html
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define LENND 20
#define LENF 100010
typedef struct
{
int v;
int amt;
}Cash;
Cash cs[100];
int f[LENF];
int Max(int a, int b)
{
if(a > b)
return a;
return b;
}
int main()
{
int i, j;
int cash, N;
int n[LENND], D[LENND];
while(scanf("%d", &cash) != EOF)
{
scanf("%d", &N);
for(i = 0; i < N; i++)
scanf("%d%d", &n[i], &D[i]);
int count = 1;
for(i = 0; i < N; i++)
{
int M = n[i];
int t = 1;
while(M - t > 0)
{
cs[count].v = D[i];
cs[count++].amt = t;
M -= t;
t *= 2;
}
if(M != 0)
{
cs[count].v = D[i];
cs[count++].amt = M;
}
}
memset(f, 0, sizeof(f));
for(i = 1; i < count; i++)
{
int allv = cs[i].amt * cs[i].v;
for(j = cash; j >= allv; j--)
f[j] = Max(f[j], f[j - allv] + allv);
}
printf("%d\n", f[cash]);
}
//system("pause");
}
]]>
}
}