delete pics to save space

2.12169.cpp

@@ -0,0 +1,43 @@
+#include<iostream>
+using namespace std;
+const int Mod=10001;
+int T,x[105];
+int p,q,r,s,a,tmp,i,j;
+void exgcd(int a,int tmp,int &x,int &y)
+{
+	if(!tmp) x=1,y=0;
+	else
+	{
+		exgcd(tmp,a%tmp,y,x);
+		y-=x*(a/tmp);
+	}
+}
+void solve()
+{
+	for(a=0;a<=10000;a++)
+	{
+		p=(a+1)%Mod,q=10001,r=0,s=0;
+		exgcd(p,q,r,s);
+		r=(x[1]-a*a%Mod*x[0]%Mod+Mod)%Mod*r%Mod;
+		tmp=(a*x[0]+r)%Mod;
+		for(i=1;i<T;i++)
+		{
+			int flag=(a*tmp+r)%Mod;
+			if(x[i]!=flag) break;
+			tmp=(a*x[i]+r)%Mod;
+		}
+		if(i==T)
+		{
+			for(j=0;j<T;j++)
+			printf("%d\n",(a*x[j]+r)%Mod);
+			break;
+		}
+	}
+}
+int main()
+{
+	cin>>T;
+	for(i=0;i<T;i++) cin>>x[i];
+	solve();
+	return 0;
+}