(I7
I89
I148
(dp0
Vline.%l
p1
(Vline.cpp
p2
S'#include<bits/stdc++.h>\r\nusing namespace std;\r\nint main ()\r\n{\r\n    int X;\r\n    cin >> X;\r\n\r\n    for (int i=2, k=1;;i+=k+1,k++)\r\n    {\r\n        if (X<i)\r\n        {\r\n            cout << k << endl ;\r\n            return 0;\r\n        }\r\n    }\r\n\r\n\r\n}\r\n'
p3
tp4
stp5
.