delete pics to save space

1.1147.cpp

@@ -0,0 +1,15 @@
+#include<cstdio>
+int l,r,sum,M;
+int main()
+{
+	scanf("%d",&M);
+	l=r=sum=1;
+	while(r<M)
+	{
+		while(sum+r+1<=M) sum+=++r;
+		if(sum==M) printf("%d %d\n",l,r);
+		sum-=l++;
+		if(l>r) r=sum=l;
+	}
+	return 0;
+}