FATE
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9596 Accepted Submission(s): 4516
#include<cstdio>
#include<iostream>
#include<cstring>
#include<algorithm>
using namespace std;
int dp[105][105],expercise[105],remine[105];
int main()
{
int n,m,s,k,i,j,tag,t,ans;
while(cin>>n>>m>>k>>s)
{
ans=-1;
for(i=1;i<=k;i++)
{
cin>>expercise[i]>>remine[i];//經驗值,忍耐度
}//接入信息
memset(dp,0,sizeof(dp));
for(i=1;i<=k;i++)
{
for(j=remine[i];j<=m;j++)//忍耐度
{
for(t=1;t<=s;t++)//殺怪數
{
dp[j][t]=max(dp[j][t],dp[j-remine[i]][t-1]+expercise[i]);
}
}
}//不知道爲什麼反過來就不行,上一題卻可以!
if(dp[m][s]>=n)
{
for(i=1;i<=m;i++)
{
if(dp[i][s]>=n)
{
cout<<m-i<<endl;
break;
}
}
}
else
{
cout<<-1<<endl;
}
}
}