Nan_Liu的博客

luoguP3374 树状数组模板 #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> using namespace std; int n,m; int a[500005],f[500005]; int lowbit(int x) { retur...

题目链接 线段树模板 #include<iostream> #include<algorithm> #include<cstring> #include<cstdio> using namespace std; const int maxn=100005; int n,m,q; long long a[maxn],lazy[4*maxn],ans[4...

二维前缀和模板 #include<iostream> #include<algorithm> #include<cstring> #include<cstdio> using namespace std; int n,m,sq[105][105],sum[105][105],x1,x2,y1,y2; int main() { cin>>...