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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. bool ktra(int n) {
  5.     if (n <= 1)
  6.         return false;
  7.     for (int i = 2; i * i <= n; ++i) {
  8.         if (n % i == 0)
  9.             return false;
  10.     }
  11.     return true;
  12. }
  13.  
  14. bool hehe(int n) {
  15.     int d = 0, g, a = n;
  16.     while (n != 0) {
  17.         g = n % 10;
  18.         d = d * 10 + g;
  19.         n /= 10;
  20.     }
  21.     return n == d;
  22. }
  23.  
  24. int iumt(int l, int r) {
  25.     int sum = 0;
  26.     for (int i = l; i <= r; ++i) {
  27.         if (ktra(i) && hehe(i)) {
  28.             sum += i;
  29.         }
  30.     }
  31.     return sum;
  32. }
  33.  
  34. int main() {
  35.     int T;
  36.     cin >> T;
  37.     vector<int> mt;
  38.     for (int t = 0; t < T; ++t) {
  39.         int l, r;
  40.         cin >> l >> r;
  41.         mt.push_back(iumt(l, r));
  42.     }
  43.     for (int kq:mt) {
  44.         cout << kq << endl;
  45.     }
  46.     return 0;
  47. }
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/awkc0x
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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