CodeForces 411B 手速题

 1 #include "iostream"
 2 #include "cstdio"
 3 #include "cstring"
 4 #include "algorithm"
 5 #include "vector"
 6 using namespace std;
 7 int cmd[110][110];
 8 bool used[110], locked[110];
 9 int n, m, k;
10 int core[110], pre[110];
11 
12 int main()
13 {
14     int i, j;
15     scanf("%d%d%d", &n, &m, &k);
16     for(i = 1; i <= n; ++i)
17         for(j = 1; j <= m; ++j)
18             scanf("%d", &cmd[i][j]);
19     for(j = 1; j <= m; ++j) {
20         memset(used, 0, sizeof(used));
21         memset(pre, 0, sizeof(pre));
22         for(i = 1; i <= n; ++i) {
23             if(core[i] || (!cmd[i][j]))
24                 continue;
25             if(locked[cmd[i][j]]) {
26                 core[i] = j;
27             }
28             else if(used[cmd[i][j]]){
29                 locked[cmd[i][j]] = 1;
30                 core[i] = j;
31                 core[pre[cmd[i][j]]] = j;
32             }
33             else {
34                 pre[cmd[i][j]] = i;
35                 used[cmd[i][j]] = 1;
36             }
37         }
38     }
39     for(i = 1; i <= n; ++i) {
40         printf("%d\n", core[i]);
41     }
42 }