1
#include<stdio.h>
2#include<string.h>
3#include<iostream>
4using namespace std;
5int n, h[10010];
6
struct heap
{
7
void swap(int*i, int*j){
8
int k = *i; *i = *j; *j = k;
9
}
10 void up(int k){
11 while (k > 1)
12 if (h[k/2] > h[k]) {
13 swap(&h[k/2], &h[k]);
14 k /= 2;
15 }else break;
16 }
17 void down(int k){
18 while (2*k <= n){
19 int l = 2*k, r = l<n ? l+1 : l;
20 if (h[r] < h[l]) l++;
21 if (h[k] > h[l]){
22 swap(&h[k], &h[l]);
23 k = l;
24 }else break;
25 }
26 }
27 void insert(int x){
28 h[++n] = x;
29 up(n);
30 }
31 void del(int k){
32 swap(&h[k], &h[n--]);
33
34 down(k);
35 }
36 int pop(){
37 del(1);
38 return h[n+1];
39 }
40
};
41heap hp;
42int main(){
43 int i, sum = 0;
44 scanf("%d", &n);
45 for (i = 1; i <= n; i++)
46 scanf("%d", &h[i]);
47 for (i = n/2; i > 0; i--) hp.down(i);
48 while (n > 1){
49 int x = hp.pop(), y = hp.pop();
50 sum += x+y;
51 hp.insert(x+y);
52 }
53 printf("%d\n", sum);
54}
55
#include<stdio.h>2
#include<string.h>3
#include<iostream>4
using namespace std;5
int n, h[10010];6
struct heap{7
void swap(int*i, int*j){8
int k = *i; *i = *j; *j = k;9
}10
void up(int k){11
while (k > 1)12
if (h[k/2] > h[k]) {13
swap(&h[k/2], &h[k]);14
k /= 2;15
}else break;16
}17
void down(int k){18
while (2*k <= n){19
int l = 2*k, r = l<n ? l+1 : l;20
if (h[r] < h[l]) l++;21
if (h[k] > h[l]){22
swap(&h[k], &h[l]);23
k = l;24
}else break;25
}26
}27
void insert(int x){28
h[++n] = x;29
up(n);30
}31
void del(int k){32
swap(&h[k], &h[n--]);33
34
down(k);35
}36
int pop(){37
del(1);38
return h[n+1];39
}40
};41
heap hp; 42
int main(){43
int i, sum = 0;44
scanf("%d", &n);45
for (i = 1; i <= n; i++)46
scanf("%d", &h[i]);47
for (i = n/2; i > 0; i--) hp.down(i);48
while (n > 1){49
int x = hp.pop(), y = hp.pop();50
sum += x+y;51
hp.insert(x+y);52
}53
printf("%d\n", sum);54
}55
Climber.pI 2010-10-12 21:43 鍙戣〃璇勮
]]>1.鏍戠殑閬嶅巻娉?/strong>
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2.鎷彿杞Щ娉?/strong>
榪欓噷鎴戠粰鍑轟竴涓腑緙琛ㄨ揪寮?/p>
a+b*c-(d+e)
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寮忓瓙鍙樻垚鎷夛細((a+(b*c))-(d+e))
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Climber.pI 2010-10-11 20:50 鍙戣〃璇勮
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