delete pics to save space

history_source/信息学奥赛一本通/2.2.1.cpp

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+#include<cstdio>
+using namespace std;
+struct data
+{
+	long long g;
+	double score;
+};
+bool cmp(data a,data b)
+{
+	return a.score>b.score;
+}
+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,k;
+	scanf("%d%d",&n,&k);
+	data stu[n],b[n];
+	for(int i=0;i<n;i++) scanf("%lld%lf",&stu[i].g,&stu[i].score);
+	fsort(stu,stu+n,cmp,b);
+	printf("%lld %g\n",stu[k-1].g,stu[k-1].score);
+	return 0;
+}