A. Power Consumption Calculation

#include <stdio.h>
#include <iostream>
#include <string.h>
using namespace std;
const int N=102;
struct node
{
int l,r;
} g
;
int main()
{
int n,p1,p2,p3,t1,t2;
while(cin>>n>>p1>>p2>>p3>>t1>>t2)
{
int sum = 0;
for (int i = 1; i <= n; i++)
{
cin>>g[i].l>>g[i].r;
sum+=(g[i].r-g[i].l)*p1;
}
for (int i = 2; i <= n; i++)
{
int x = g[i].l-g[i-1].r;
sum+=min(x,t1)*p1;
x-=min(x,t1);
sum+=min(x,t2)*p2;
x-=min(x,t2);
sum+=x*p3;
}
cout<<sum<<endl;
}
return 0;
}