为什么我的代码会超时? #include<iostream> using namespace std; const int ma=1000; int len,f[ma][ma],s[ma]; int main(){ int temp; cin>>len; for(int i=1;i<=len;i++){ cin>>temp; s[i]=s[i-1]+temp; f[i][i]=0; } for(int l=2;l<=len;l++){ for(int i=1;i<=len-l+1;i++){ int j=i+l-1; int minn=0x3f3f3f3f; for(int k=i;k<j;k++){ minn=min(f[i][k]+f[k+1][j]+s[j]-s[i-1],minn); } f[i][j]=minn; } } cout<<f[1][len]; return 0; } 感谢帮助!!