delete pics to save space

history_source/ccf 入门篇/U5/5.3.6.cpp

@@ -0,0 +1,54 @@
+#include<iostream>
+#include<string>
+using namespace std;
+struct Type
+{
+	int ID,score;
+};
+bool cmp(Type a,Type b)
+{
+	if(a.score>b.score) return 1;
+	if(a.score<b.score) return 0;
+	return a.ID<b.ID;
+}
+template<class T_fsort>
+void fsort(T_fsort *left,T_fsort *right,bool (*cmp)(T_fsort a,T_fsort b),T_fsort *k)
+{
+	if(right-left<=1) return;
+	unsigned int len=right-left;
+	fsort(left,left+len/2,cmp,k);
+	fsort(left+len/2,right,cmp,k+len/2);
+	int i=0,j=len/2,n=0;
+	while(i<len/2&&j<len)
+	{
+		if(cmp(left[i],left[j])) k[n++]=left[i++];
+		else k[n++]=left[j++];
+	}
+	while(i<len/2) k[n++]=left[i++];
+	while(j<len) k[n++]=left[j++];
+	for(int i=0;i<len;i++) left[i]=k[i];
+}
+int main()
+{
+	int n,m;
+	scanf("%d%d",&n,&m);
+	Type a[n],k[n];
+	for(int i=0;i<n;i++) scanf("%d%d",&a[i].ID,&a[i].score);
+	fsort(a,a+n,cmp,k);
+	int f=a[int(m*1.5)].score;
+	printf("%d ",f);
+	int sum=0;
+	for(int i=0;a[i].score>=f;i++) sum++;
+	printf("%d\n",sum);
+	for(int i=0;i<sum;i++) printf("%d %d\n",a[i].ID,a[i].score);
+	return 0;
+}
+/*
+6 3
+1000 90
+3239 88
+2390 95
+7231 84
+1005 95
+1001 88
+*/