CodeForces 413C 手速题

 1 #include "iostream"
 2 #include "cstdio"
 3 #include "cstring"
 4 #include "algorithm"
 5 #include "vector"
 6 using namespace std;
 7 int n, m;
 8 int score[110];
 9 int tot, b[110];
10 
11 int main()
12 {
13     __int64 res = 0;
14     int i, j;
15     scanf("%d%d", &n, &m);
16     for(i = 1; i <= n; i++) {
17         scanf("%d", &score[i]);
18         res += score[i];
19     }
20     tot = 0;
21     int index;
22     for(i = 1; i <= m; i++) {
23         scanf("%d", &index);
24         res -= score[index];
25         b[++tot] = score[index];
26     }
27     sort(b + 1, b + m + 1);
28     for(i = m; i >= 1; i--) {
29         if(res > b[i])
30             res <<= 1;
31         else
32             res += b[i];
33 
34     }
35     printf("%I64d\n", res);
36 }