关键在于 构造前缀和数组
类比前n项和
第n项和等于 前n-1项和加上当前项
s[n]s[n-1]a[n];
#include<iostream> #include<algorithm> #include<cstring> #include<cstdio> using namespace std; int n,m; const int N1e5100; int a[N],s[N]; int ma…
新建NewtonsoftJsonSerializer.cs
/// <summary>
/// ISerializer implementation based on Newtonsoft.Json.
/// Default serializer used in calls to GetJsonAsync, PostJsonAsync, etc.
/// </summary>
public class NewtonsoftJsonSerializer : IJsonSerial…