59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
#include<iostream>
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#include<algorithm>
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using namespace std;
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#define inf 110
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int dp[inf][inf];
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#define Max(a,b) a>b?a:b
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struct node
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{
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int ai,bi;
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}b[inf];
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int cmp(struct node a,struct node b){return a.ai<b.ai;}
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int main()
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{
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int n,p,t,i,j;
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while(cin>>n>>t>>p)
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{
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if(n==0&&t==0&&p==0)
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break;
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memset(b,0,sizeof(b));
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for(i=1;i<=n;i++)
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scanf("%d%d",&b[i].ai,&b[i].bi);
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sort(b+1,b+n+1,cmp);
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b[0].ai=0;
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b[0].bi=1;
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b[n+1].bi=b[n+1].ai=100;
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memset(dp,0,sizeof(dp));
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int T=(100+p-1)/p;
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int k;
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for(i=1;i<=T;i++)
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{
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for(j=0;j<=100;j++)
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{
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int max=0;
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for(k=0;k<=n;k++)
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{
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if(b[k].ai+j>100)
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break;
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max=Max(max,dp[i-1][j+b[k].ai]+b[k].bi);
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}
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dp[i][j]=max;
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}
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for(j=99;j>100-t;j--)
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dp[i][100]=Max(dp[i][j],dp[i][100]);
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for(j=100-t;j>=0;j--)
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dp[i][j+t]=Max(dp[i][j],dp[i][j+t]);
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}
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for(i=1;i<=T;i++)
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{
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for(j=0;j<=100;j++)
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if(dp[i][j]>=100)
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break;
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if(j<=100)
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{printf("%d\n",i);break;}
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}
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if(i>T)printf("My god\n");
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}
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return 0;
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}
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