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题面题解(分块)代码#include<iostream>#include<cstdio>#include<string>#include<cstring>#include<algorithm>#include<vector>#include<cmath>using namespace std;typedef long long ll;const int N = 1e5 + 10;int n,

题面题解代码#include<iostream>#include<cstdio>#include<string>#include<cstring>#include<algorithm>#include<cmath>using namespace std;typedef long long ll;const int N = 1e5 + 10;ll a[N]; //输入数组ll sum[N]; //区间