delete pics to save space

history_source/信息学奥赛一本通/1.6.1.8.cpp

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+#include<cstdio>
+using namespace std;
+/*
+x<EFBFBD><EFBFBD>,סy<D7A1><79>;
+x*(x+1)/2-2*y=n; 
+2*y+n=x*(x+1)/2;
+2*y=x*(x+1)/2-n;
+y=(x*(x+1)/2-n)/2; 
+*/
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	for(int i=2;;i++)
+	{
+		if((i*(i+1)/2-n)%2==0)
+		{
+			int y=(i*(i+1)/2-n)/2;
+			if(y>0&&y<=i)
+			{
+				printf("%d %d\n",y,i);
+				return 0;
+			}
+		}
+	}
+	return 0;
+}
+