delete pics to save space

history_source/挑战程序设计竞赛/3.1.3.cpp

@@ -0,0 +1,44 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int n,m,x[100005];
+void init()
+{
+	scanf("%d%d",&n,&m);
+	for(int i=0;i<n;i++) scanf("%d",x+i);
+}
+bool c(int d)
+{
+	int last=0,crt;
+	for(int i=1;i<m;i++)
+	{
+		crt=last+1;
+		while(crt<n&&x[crt]-x[last]<d) crt++;
+		if(crt==n) return 0;
+		last=crt;
+	}
+	return 1;
+}
+void solve()
+{
+	sort(x,x+n);
+	int l=0,r=1<<30,mid;
+	while(r-l>1)
+	{
+		mid=(l+r)/2;
+		if(c(mid)) l=mid;
+		else r=mid;
+	}
+	printf("%d\n",l);
+}
+int main()
+{
+	init();
+	solve();
+	return 0;
+}
+/*
+5
+3
+1 2 8 4 9
+*/