C :

#include<stdio.h>
int main()
{
    int v1,v2,t,s,l;
    while(~scanf("%d%d%d%d%d",&v1,&v2,&t,&s,&l))
    {
        int x1=0,x2=0,i;
        for(i=1;;i++)
        {
            x1+=v1;
            x2+=v2;
            if(x1==l||x2==l)
                break;
            if(x1-x2>=t)
                x1-=v1*s;
        }
        if(x1>x2)
            printf("R\n");
        else if(x2>x1)
            printf("T\n");
        else
            printf("D\n");
        printf("%d\n",i);
    }
    return 0;
}

C++ :

#include <iostream>
#include <algorithm>
#include <iomanip>
#include <cstdio>
#include <cstring>
using namespace std;
int main()
{
	int v1 = 0, v2 = 0, t = 0, s = 0, l = 0;
	int len_t = 0, len_r = 0, cnt = 0, i = 0;
	scanf("%d %d %d %d %d",&v1,&v2,&t,&s,&l);
	while (true)
	{
		cnt++;
		len_r += v1;
		len_t += v2;
		if (len_r == len_t && len_t == l)
		{
			printf("D\n%d\n",cnt);
			return 0;
		}
		else if (len_t == l)
		{
			printf("T\n%d\n",cnt);
			return 0;
		}
		else if (len_r == l)
		{
			printf("R\n%d\n",cnt);
			return 0;
		}


		if (len_r - len_t >= t)
		{
			for (i = 1; i <= s; i++)
			{
				cnt++;
				len_t += v2;
				if (len_r == len_t && len_t == l)
				{
					printf("D\n%d\n",cnt);
					return 0;
				}
				else if (len_t == l)
				{
					printf("T\n%d\n",cnt);
					return 0;
				}
				else if (len_r == l)
				{
					printf("R\n%d",cnt);
					return 0;
				}
			}
		}
	}
}