1 /* 2 贪心：每次把一个丢掉，选择最小的。累加求和，重复n-1次 3 */ 4 /************************************************ 5 Author :Running_Time 6 Created Time :2015-8-1 13:20:01 7 File Name :A.cpp 8 *************************************************/ 9 10 #include <cstdio> 11 #include <algorithm> 12 #include <iostream> 13 #include <sstream> 14 #include <cstring> 15 #include <cmath> 16 #include <string> 17 #include <vector> 18 #include <queue> 19 #include <deque> 20 #include <stack> 21 #include <list> 22 #include <map> 23 #include <set> 24 #include <bitset> 25 #include <cstdlib> 26 #include <ctime> 27 using namespace std; 28 29 typedef long long ll; 30 const int MAXN = 3e5 + 10; 31 const int INF = 0x3f3f3f3f; 32 const int MOD = 1e9 + 7; 33 int a[MAXN]; 34 35 int main(void) { //Codeforces Round #263 (Div. 2) C. Appleman and Toastman 36 int n; ll sum, ans; 37 while (scanf ("%d", &n) == 1) { 38 sum = 0; 39 for (int i=1; i<=n; ++i) { 40 scanf ("%d", &a[i]); sum += a[i]; 41 } 42 if (n == 1) { 43 printf ("%d\n", a[1]); continue; 44 } 45 sort (a+1, a+1+n); 46 ans = sum; 47 for (int i=1; i<n; ++i) { 48 ans += sum; sum -= a[i]; 49 } 50 printf ("%I64d\n", ans); 51 } 52 53 return 0; 54 }
转载于:https://www.cnblogs.com/Running-Time/p/4695660.html
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