BZOJ2426 [HAOI2010]工厂选址

 1 /**************************************************************
 2     Problem: 2426
 3     User: rausen
 4     Language: C++
 5     Result: Accepted
 6     Time:332 ms
 7     Memory:1592 kb
 8 ****************************************************************/
 9  
10 #include <cstdio>
11 #include <algorithm>
12 using namespace std;
13 const int N = 55;
14 const int M = 50005;
15 struct data{
16     int del, cnt;
17     data(void){}
18     data(int a, int b) : del(a), cnt(b) {}
19 }c[M];
20 inline bool operator < (const data a, const data b){
21     return a.del > b.del;
22 }
23   
24 inline int read(){
25     int x = 0, sgn = 1;
26     char ch = getchar();
27     while (ch < ‘0‘ || ch > ‘9‘){
28         if (ch == ‘-‘) sgn = -1;
29         ch = getchar();
30     }
31     while (ch >= ‘0‘ && ch <= ‘9‘){
32         x = x * 10 + ch - ‘0‘;
33         ch = getchar();
34     }
35     return sgn * x;
36 }
37   
38 int m, n, b, H;
39 int sum_a, sum_cost;
40 int a[M], h[N], C[M];
41   
42 int main(){
43     m = read(), b = read(), H = read(), n = read();
44     for (int i = 1; i <= m; ++i)
45         a[i] = read(), sum_a += a[i];
46     sum_a -= b;
47     for (int i = 1; i <= n; ++i)
48         h[i] = read();
49     for (int i = 1; i <= m; ++i)
50         C[i] = read(), sum_cost += C[i] * a[i];
51   
52     int sum, j, rest, ans = (int) 1e9, ans1;
53     for (int i = 1; i <= n; ++i){
54         sum = sum_cost, rest = sum_a;
55         for (j = 1; j <= m; ++j)
56             c[j] = data(C[j] - read(), a[j]);
57         sort(c + 1, c + m + 1);
58   
59         for (j = 1; j <= m; ++j)
60             if (rest >= c[j].cnt)
61                 rest -= c[j].cnt, sum -= c[j].cnt * c[j].del;
62             else break;
63         if (rest > 0)
64             sum -= rest * c[j].del;
65         if (ans > sum + h[i])
66             ans1 = i, ans = sum + h[i];
67     }
68     printf("%d\n%d\n", ans1, ans + H);
69     return 0;
70 }