1 #include <iostream> 2 #include <algorithm> 3 #include <cstring> 4 #include <cstdio> 5 #include <string> 6 #include <map> 7 #include <cmath> 8 #include <vector> 9 10 #define Faster ios::sync_with_stdio(false),cin.tie(0) 11 #define Read freopen("in.txt","r",stdin),freopen("out.txt","w",stdout) 12 #define Close fclose(stdin),fclose(stdout) 13 const int maxn = 105; 14 using namespace std; 15 const int MOD = 1e9+7; 16 typedef long long ll; 17 18 #define INF 100000000 19 20 int a[maxn]; 21 int dp[maxn][maxn]; 22 23 int main(){ 24 Faster; 25 int n; 26 cin >> n; 27 for(int i = 1;i <= n;i++){ 28 cin >> a[i]; 29 } 30 memset(dp, 0, sizeof(dp)); 31 for(int l = 2;l < n;l++){ //长度从2开始 32 for(int i = 2;i+l <= n+1;i++){ 33 int j = i+l-1; 34 dp[i][j] = INF; 35 for(int k = i;k < j;k++){ //枚举中点 36 dp[i][j] = min(dp[i][j], dp[i][k]+dp[k+1][j] + a[i-1]*a[k]*a[j]); 37 } 38 } 39 } 40 cout << dp[2][n] << endl; 41 return 0; 42 }