模拟 2015百度之星资格赛 1003 IP聚合

题目传送门

 1 /*
 2     模拟水题，排序后找出重复的ip就可以了
 3 */
 4 #include <cstdio>
 5 #include <iostream>
 6 #include <algorithm>
 7 #include <cstring>
 8 #include <string>
 9 #include <cmath>
10 using namespace std;
11
12 const int MAXN = 1e3 + 10;
13 const int INF = 0x3f3f3f3f;
14 struct Ip
15 {
16     int a, b, c, d;
17 }ip[MAXN];
18 struct H
19 {
20     int a, b, c, d;
21 }h[MAXN];
22 int ans[55];
23
24 bool cmp(H x, H y)
25 {
26     if (x.a == y.a)
27     {
28         if (x.b == y.b)
29         {
30             if (x.c == y.c)    return x.d < y.d;
31             else    return x.c < y.c;
32         }
33         else    return x.b < y.b;
34     }
35     else    return x.a < y.a;
36 }
37
38 int main(void)        //2015百度之星资格赛 1003 IP聚合
39 {
40     int t, cas = 0;
41     scanf ("%d", &t);
42     while (t--)
43     {
44         int n, m;    scanf ("%d%d", &n, &m);
45         for (int i=1; i<=n; ++i)
46             scanf ("%d.%d.%d.%d", &ip[i].a, &ip[i].b, &ip[i].c, &ip[i].d);
47
48         memset (ans, 0, sizeof (ans));
49         for (int i=1; i<=m; ++i)
50         {
51             int u, v, w, x;
52             scanf ("%d.%d.%d.%d", &u, &v, &w, &x);
53             for (int j=1; j<=n; ++j)
54             {
55                 h[j].a = (ip[j].a & u);    h[j].b = (ip[j].b & v);
56                 h[j].c = (ip[j].c & w);    h[j].d = (ip[j].d & x);
57             }
58
59             sort (h+1, h+1+n, cmp);
60
61             int cnt = 0;
62             for (int k=2; k<=n; ++k)
63             {
64                 if (h[k].a == h[k-1].a &&
65                     h[k].b == h[k-1].b &&
66                     h[k].c == h[k-1].c &&
67                     h[k].d == h[k-1].d)    cnt++;
68             }
69
70             ans[i] = (n - cnt);
71         }
72
73         printf ("Case #%d:\n", ++cas);
74         for (int i=1; i<=m; ++i)    printf ("%d\n", ans[i]);
75     }
76
77     return 0;
78 }
79
80 /*
81 2
82 5 2
83 192.168.1.0
84 192.168.1.101
85 192.168.2.5
86 192.168.2.7
87 202.14.27.235
88 255.255.255.0
89 255.255.0.0
90 4 2
91 127.127.0.1
92 10.134.52.0
93 127.0.10.1
94 10.134.0.2
95 235.235.0.0
96 1.57.16.0
97 */