delete pics to save space

history_source/信息学奥赛一本通/2.7.10.cpp

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+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int n,m,a[100005];
+bool solve(int maxn)
+{
+	int sum=0,cnt=1,res=0;
+	for(int i=0;i<n;i++)
+		if(sum+a[i]>maxn)
+		{
+			cnt++;
+			res=max(res,sum);
+			sum=a[i];
+		}
+		else sum+=a[i];
+	if(cnt>m) return 0;
+	return 1;
+}
+int main()
+{
+	scanf("%d%d",&n,&m);
+	int l=0,r=0,mid;//(l,r]
+	for(int i=0;i<n;i++)
+	{
+		scanf("%d",a+i);
+		r+=a[i];
+		l=max(l,a[i]);
+	}
+	while(l<r)
+	{
+		mid=(l+r)>>1;
+		if(solve(mid)) r=mid;
+		else l=mid+1;
+	}
+	printf("%d\n",r);
+	return 0;
+}