#include<iostream>
#include<graphics.h>
#include<stdlib.h>
#include<string.h>
#include <string>
#include<conio.h>
#include<algorithm>
using namespace std;
struct work {
int xh;
int begin;
int end;
};
bool compare(work x, work y);
int main()
{
int n, r, i, j, count = 1, m, maxend = 0, preg, prek;
char ss[55];
work s[105];
scanf_s("%d", &n);
m = n;
while (m--)
{
scanf_s("%d", &r);
scanf_s("%d %d", &s[r].begin, &s[r].end);
s[r].xh = r;
if (s[r].end > maxend) maxend = s[r].end;
}
initgraph(1000, 480, SHOWCONSOLE | NOCLOSE);
setbkcolor(WHITE);
cleardevice();
setcolor(BLACK);
line(30, 450, 30, 10);
line(30, 450, 900, 450);
line(25, 15, 30, 10);
line(35, 15, 30, 10);
line(895, 445, 900, 450);
line(895, 455, 900, 450);
preg = 800 / maxend;
for (i = 0; i <= maxend; i++)
{
setlinestyle(PS_DASHDOT);
line(30 + i * preg, 450, 30 + i * preg, 30);
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