UVALIVE 3971 Assemble 二分+貪心

#include <map>
#include <set>
#include <list>
#include <cmath>
#include<cctype>
#include <ctime>
#include <deque>
#include <stack>
#include <queue>
#include <cstdio>
#include <string>
#include <vector>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <algorithm>
#define LL long long
#define PI 3.1415926535897932626
using namespace std;
int gcd(int a, int b)
{
	return a % b == 0 ? b : gcd(b, a % b);
}
#define MAXN 1005
struct node
{
    int value;
    int qlty;
    friend bool operator < (const node &a,const node &b)
    {
        if (a.value==b.value) return a.qlty>b.qlty;
        return a.value<b.value;
    }
}src[MAXN][MAXN];
int N,B;
int cas;
int num[MAXN];
int limit;
map<string , int> m;
void read()
{
    m.clear();
    cas=1,limit=0;
    memset(num,0,sizeof(num));
    char str[30],tmp[30];
    scanf("%d%d\n",&N,&B);
    for (int i=0;i<N;i++)
    {
         int tv,tq;
         scanf("%s",str);
         if (!m[str]) m[str]=cas++;
         scanf("%s%d%d",tmp,&tv,&tq);
         if (tq>limit) limit=tq;
         src[m[str]][num[m[str]]].qlty=tq;
         src[m[str]][num[m[str]]++].value=tv;
    }
}
bool judge(int mid)//´«µÝÖÊÁ¿Öµ
{
    int sum=0,j;
    for (int i=1;i<cas;i++)
    {
          for (j=0;j<num[i];j++)
          {
              if (src[i][j].qlty>=mid && sum+src[i][j].value<=B)
                { sum+=src[i][j].value;break;}
          }
          if (j==num[i]) return false;
    }
    return true;
}
int binary()
{
    int mid,left=0,right=limit;
    while (left<right)
    {
        //printf("%d %d\n",left,right);
        mid=(left+right)/2;
        if (left==mid) break;
        if (judge(mid)) left=mid;
        else right=mid;
    }
    //printf("%d %d %d\n",left,mid,right);
    //if (judge(mid+1)) mid++;
    return mid;
}
int main()
{
   // freopen("sample.txt","r",stdin);
    int T;
    scanf("%d",&T);
    while(T--)
    {
        read();
        //printf("%d %d\n",cas,limit);
        for (int i=1;i<cas;i++) sort(src[i],src[i]+num[i]);
        //for (int i=1;i<cas;i++) printf("%d ",num[i]);
        int ans=binary();
        printf("%d\n",ans);
    }
    return 0;
}