func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[100 + 10];   int main() {     int n;     while (~scanf( %d , &n)) {       int p1, p2, p3, t1, t2;       scanf( %d%d%d%d%d , &p1, &p2, &p3, &t1, &t2);       int ans = 0;       int temp, len = 0;       for (int i = 1; i <= n; i++) {         int x, y;         scanf( %d%d , &x, &y);         ans += (y - x) * p1;         if (i > 1) {           a[len++] = x - temp;         }         temp = y;       }       for (int i = 0; i < len; i++) {         if (a[i] < t1) {           ans += a[i] * p1;         } else if (a[i] < t1 + t2) {           ans += t1 * p1 + (a[i] - t1) * p2;         } else {           ans += t1 * p1 + t2 * p2 + (a[i] - t1 - t2) * p3;         }       }       cout << ans << endl;     }     return 0;   }   