贪心．．尽量把一样的材料放在一起．．． 然后写蠢了．．妈蛋．．． 详情见代码
1/*************************************************************************
2 > File Name: code/bc/#56/1001.cpp
3 > Author: 111qqz
4 > Email: rkz2013@126.com
5 > Created Time: 2015年09月19日 星期六 18时55分49秒
6 ************************************************************************/
7
8#include<iostream>
9#include<iomanip>
10#include<cstdio>
11#include<algorithm>
12#include<cmath>
13#include<cstring>
14#include<string>
15#include<map>
16#include<set>
17#include<queue>
18#include<vector>
19#include<stack>
20#include<cctype>
21#define y1 hust111qqz
22#define yn hez111qqz
23#define j1 cute111qqz
24#define ms(a,x) memset(a,x,sizeof(a))
25#define lr dying111qqz
26using namespace std;
27#define For(i, n) for (int i=0;i<int(n);++i)
28typedef long long LL;
29typedef double DB;
30const int inf = 0x3f3f3f3f;
31const int N=5E2+7;
32int a[N],b[N];
33int ans,cnt;
34int p[N];
35int n;
36int main()
37{
38 #ifndef ONLINE_JUDGE
39 freopen("in.txt","r",stdin);
40 #endif
41 int T;
42 cin>>T;
43 while (T--)
44 {
45 ans = 0;
46 cnt = 0;
47 ms(p,0);
48 scanf("%d",&n);
49 for ( int i = 0 ; i < n ; i++ )
50 {
51 scanf("%d %d",&a[i],&b[i]);
52 p[a[i]]+=b[i];
53 }
54 int kind = 0;
55 for ( int i = 1 ;i <= 500 ; i++)
56 {
57 if (p[i]!=0)
58 {
59 // cnt = cnt + (p[i]-1)/64 + 1;
60 cnt = cnt + (p[i]+63)/64; //这样写不知高到哪里去了．
61 p[i] = 0;
62 }
63
64 }
65 //ans = ans + (cnt-1)/36+1;
66 ans = (cnt+35)/36; //不知高到哪里去了．．．
67 printf("%d\n",ans);
68
69
70 }
71
72
73 #ifndef ONLINE_JUDGE
74 fclose(stdin);
75 #endif
76 return 0;
77}