delete pics to save space

1.3372.cpp

@@ -0,0 +1,73 @@
+#include<cstdio>
+const int maxn=100005;
+int n,m,c;
+typedef long long ll;
+ll a[maxn];
+int pl,pr;
+ll v;
+ll sumv[maxn<<2],addv[maxn<<2];
+#define lc(x) (x<<1)
+#define rc(x) (x<<1|1)
+inline void push_up(int o)
+{ sumv[o]=sumv[lc(o)]+sumv[rc(o)]; }
+inline void f(int o,int L,int R,ll k)
+{
+	addv[o]+=k;
+	sumv[o]+=k*(R-L+1);
+}
+inline void push_down(int o,int L,int R)
+{
+	int M=(L+R)>>1;
+	f(lc(o),L,M,addv[o]);
+	f(rc(o),M+1,R,addv[o]);
+	addv[o]=0;
+}
+void build(int o,int L,int R)
+{
+	if(L==R) { sumv[o]=a[L]; return; }
+	int M=(L+R)>>1;
+	build(lc(o),L,M);
+	build(rc(o),M+1,R);
+	sumv[o]=sumv[lc(o)]+sumv[rc(o)];
+	push_up(o);
+}
+void update(int o,int L,int R)
+{
+	if(pl<=L&&R<=pr) { f(o,L,R,v); return; }
+	push_down(o,L,R);
+	int M=(L+R)>>1;
+	if(pl<=M) update(lc(o),L,M);
+	if(pr>M) update(rc(o),M+1,R);
+	push_up(o);
+}
+ll query(int o,int L,int R)
+{
+	ll res=0;
+	if(pl<=L&&R<=pr) return sumv[o];
+	int M=(L+R)>>1;
+	push_down(o,L,R);
+	if(pl<=M) res+=query(lc(o),L,M);
+	if(pr>M) res+=query(rc(o),M+1,R);
+	return res;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+	freopen("pro.out","w",stdout);
+#endif
+	scanf("%d%d",&n,&m);
+	for(int i=1;i<=n;i++) scanf("%lld",&a[i]);
+	build(1,1,n);
+	for(int i=0;i<m;i++)
+	{
+		scanf("%d%d%d",&c,&pl,&pr);
+		if(c==1)
+		{
+			scanf("%lld",&v);
+			update(1,1,n);
+		}
+		else printf("%lld\n",query(1,1,n));
+	}
+	return 0;
+}