delete pics to save space

7.3468.cpp

@@ -0,0 +1,119 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+typedef long long LL;
+const int maxn=100005;
+int n,m;
+LL a[maxn<<2],sum[maxn<<2],tag[maxn<<2],pl,pr,upd;
+inline void Add(int o,int L,int R,LL v)
+{
+	tag[o]+=v;
+	sum[o]+=(R-L+1)*v;
+}
+#define Lc(o) (o<<1)
+#define Rc(o) (o<<1|1)
+inline void PushDown(int o,int L,int R)
+{
+	int M=(L+R)>>1;
+	Add(Lc(o),L,M,tag[o]);
+	Add(Rc(o),M+1,R,tag[o]);
+	tag[o]=0;
+}
+inline void PushUp(int o)
+{
+	sum[o]=sum[Lc(o)]+sum[Rc(o)];
+}
+void build(int o,int L,int R)
+{
+	if(L==R) { sum[o]=a[L]; return; }
+	int M=(L+R)>>1;
+	build(Lc(o),L,M);
+	build(Rc(o),M+1,R);
+	PushUp(o);
+}
+void update(int o,int L,int R)
+{
+	if(pl<=L&&R<=pr) { Add(o,L,R,upd); return; }
+	int M=(L+R)>>1;
+	PushDown(o,L,R);
+	if(pl<=M) update(Lc(o),L,M);
+	if(pr>M) update(Rc(o),M+1,R);
+	PushUp(o);
+}
+LL query(int o,int L,int R)
+{
+	if(pl<=L&&R<=pr) return sum[o];
+	PushDown(o,L,R);
+	LL res=0; int M=(L+R)>>1;
+	if(pl<=M) res+=query(Lc(o),L,M);
+	if(pr>M) res+=query(Rc(o),M+1,R);
+	PushUp(o);
+	return res;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&m);
+	for(int i=1;i<=n;i++) scanf("%lld",&a[i]);
+	build(1,1,n);
+	while(m-->0)
+	{
+		char op; scanf("%s%lld%lld",&op,&pl,&pr);
+		if(op=='C')
+		{
+			scanf("%lld",&upd);
+			update(1,1,n);
+		}
+		else printf("%lld\n",query(1,1,n));
+	}
+	return 0;
+}
+/*
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+typedef long long LL;
+const int maxn=100005;
+int n,m; LL a[maxn],s[maxn],c[2][maxn];
+inline LL ask(int id,int x)
+{
+	LL res=0;
+	for(;x;x-=(x&-x)) res+=c[id][x];
+	return res;
+}
+inline void add(int id,int x,int y)
+{
+	for(;x<=n;x+=(x&-x)) c[id][x]+=y;
+}
+inline LL query(int x) { return s[x]+(x+1)*ask(0,x)-ask(1,x); }
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&m);
+	for(int i=1;i<=n;i++)
+	{
+		scanf("%lld",&a[i]);
+		s[i]=s[i-1]+a[i];
+	}
+	while(m-->0)
+	{
+		char op; int l,r,d; scanf("%s%d%d",&op,&l,&r);
+		if(op=='C')
+		{
+			scanf("%d",&d);
+			add(0,l,d);
+			add(0,r+1,-d);
+			add(1,l,l*d);
+			add(1,r+1,-(r+1)*d);
+		}
+		else printf("%lld\n",query(r)-query(l-1));
+	}
+	return 0;
+}
+*/