标签:style os io for html ar htm amp
很裸的01背包,水题,注意控制精度
#include <iostream> #include <algorithm> #include <cstdio> #include <cstring> #include <cstdlib> const int INF = 1e6; using namespace std; int dp[4*INF],cost[5],w[31]; int max(int x,int y) { if(x > y) return x; else return y; } int min(int x,int y) { if(x > y) return y; else return x; } int main() { double z; int n,zong,m; char mm; while(~scanf("%lf%d",&z,&n)) { if(n==0) break; zong = z * 100; int l = 1; memset(w,0,sizeof(w)); for(int i = 1;i<=n;i++) { scanf("%d",&m); int sum = 0; memset(cost,0,sizeof(cost)); int flag = 1; for(int j = 0;j<m;j++) { scanf(" %c:%lf",&mm,&z); if(mm=='A') cost[1] += z * 100; else if(mm=='B') cost[2] += z * 100; else if(mm=='C') cost[3] += z * 100; else flag = 0; } if(!flag) continue; if(cost[1]<=60000 &&cost[2]<=60000 &&cost[3]<=60000) sum += cost[1]+cost[2]+cost[3]; if(sum<=10000000) { w[l++] = sum; // cout<<"w[l]="<<w[l-1]<<endl; } } memset(dp,0,sizeof(dp)); for(int i = 1;i<=l;i++) { for(int j = zong;j>=w[i];j--) { if(dp[j]<dp[j-w[i]]+w[i]) dp[j] = dp[j-w[i]]+w[i]; } } printf("%.2lf\n",dp[zong]*1.0/100); } return 0; }
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标签:style os io for html ar htm amp
原文地址:http://blog.csdn.net/wjw0130/article/details/38303409