delete pics to save space

history_source/信息学奥赛一本通/2.2.5.cpp

@@ -0,0 +1,46 @@
+#include<iostream>
+using namespace std;
+struct data
+{
+	int ID;
+	int score;
+};
+bool cmp(data a,data b)
+{
+	if(a.score>b.score) return 1;
+	if(a.score<b.score) return 0;
+	return a.ID<b.ID;
+}
+template<class T>
+void fsort(T *left,T *right,bool (*cmp)(T a,T b),T *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;
+	cin>>n>>m;
+	data p[n],k[n];
+	for(int i=0;i<n;i++) cin>>p[i].ID>>p[i].score;
+	fsort(p,p+n,cmp,k);
+	int f=p[int((double)m*1.5)-1].score;
+	cout<<f<<" ";
+	int add=0;
+	while(p[add].score>=f) add++;
+	cout<<add<<endl;
+	for(int i=0;i<add;i++) cout<<p[i].ID<<" "<<p[i].score<<endl;
+	return 0;
+}
+