combo.in

10000

combo.out

18 142

297 328

388 412

1998 2002

 #include <bits/stdc++.h>

 const int INF = 0x3f3f3f3f;

 inline int min(int a,int b){return a > b? b : a;}

 inline int max(int a,int b){return a < b? b : a;}

 inline int read(long long &x){

     x = ;char ch = getchar();char c = ch;

     while(ch > '' || ch < '')c = ch, ch = getchar();

     while(ch <= '' && ch >= '')x = x *  + ch - '',ch = getchar();

     if(c == '-') x = -x;

 }

 long long m;

 int main(){

     read(m);

     for(long long x = ;x < m;x ++)

     {

         long long k = x * x - x +  * m;

         long long y = (long long)(sqrt(/4.0 - x + x * x +  * m) - /2.0);

         if(y < x)continue;//防止取重

         //防止误差，分别考察y,y-1,y+1

         if(y * y + y == k)printf("%lld %lld\n", x, y);

         y ++;

         if(y * y + y == k)printf("%lld %lld\n", x, y);

         y -= ;

         if(y * y + y == k)printf("%lld %lld\n", x, y);

     }

     return ;

 }