(I7
I131
I148
(dp0
Vline.%l
p1
(Vlane.cpp
p2
S'#include <bits/stdc++.h>\r\nusing namespace std;\r\nint main (){\r\n   ios_base::sync_with_stdio(false);\r\n   cin.tie(NULL);\r\n   long long x,a=1,b=3,c;\r\n   cin>>x;\r\n   if (x==1) c=0;\r\n  else {\r\n    for (c=1;   ;c++) {\r\n    if (x<=b and x>a) {break;}\r\n    else {\r\n    b=b+c+2;\r\n    a=a+c+1;\r\n    }\r\n   }\r\n  }\r\n cout<<c+1<<endl;\r\n   }\r\n'
p3
tp4
stp5
.