delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/8.1233.cpp
+++ b/8.1233.cpp
@ -0,0 +1,27 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+const int maxn=100005;
+int n,a[maxn],s[maxn],q[maxn],l,r,f[maxn],g[maxn];
+int main()
+{
+	#ifdef local
+	freopen("pro.in","r",stdin);
+	#endif
+	scanf("%d",&n);
+	for(int i=1;i<=n;i++) scanf("%d",&a[i]);
+	reverse(a+1,a+1+n);
+	for(int i=1;i<=n;i++) s[i]=s[i-1]+a[i];
+	q[l=r=1]=0;
+	for(int i=1;i<=n;i++)
+	{
+		while(l<r&&s[i]>=f[q[l+1]]+s[q[l+1]]) l++;
+		f[i]=s[i]-s[q[l]];
+		g[i]=g[q[l]]+1;
+		while(l<=r&&s[i]+f[i]<=s[q[r]]+f[q[r]]) r--;
+		q[++r]=i;
+	}
+	printf("%d\n",g[n]);
+	return 0;
+}