Comments

• 
  

  0

  

  bengokyeuanh99  commented on May 31, 2025, 3:14 p.m.

  include <iostream>

  include <limits>

  int main() { std::iosbase::syncwith_stdio(false); std::cin.tie(nullptr);

  int n;
  if (!(std::cin >> n) || n <= 0 || n > 1000) {
      std::cerr << "Invalid input size.\n";
      return 1;
  }
  
  int even_count = 0, odd_count = 0;
  long long even_sum = 0, odd_sum = 0;
  
  for (int i = 0; i < n; ++i) {
      int value;
      if (!(std::cin >> value)) {
          std::cerr << "Invalid element input.\n";
          return 1;
      }
  
      if (value % 2 == 0) {
          ++even_count;
          even_sum += value;
      } else {
          ++odd_count;
          odd_sum += value;
      }
  }
  
  std::cout << even_count << '\n'
            << odd_count << '\n'
            << even_sum  << '\n'
            << odd_sum   << '\n';
  
  return 0;
  

  }

• 
  

  -1

  

  nguyencongquang0209  commented on March 16, 2025, 3:19 a.m.

  include<bits/stdc++.h>

  using namespace std;

  define ll long long

  define print cout<<

  ll x,a[1007]; int main(){ cin>>x; ll s1=0; ll s2=0; ll dem1=0 ; ll dem2 =0; for (int i =1; i<=x;i++) cin>>a[i]; for (int j =1 ; j<=x; j++){ if (a[j]%2==0){ dem1++; s1+=a[j]; }else{ dem2++; s2+=a[j]; } } cout<<dem1<

  }

• 
  

  -3

  

  Anhpython8a3kkk  commented on Feb. 8, 2025, 9:40 a.m.

  kkk

• 
  

  -5

  

  peterphuc290306  commented on Oct. 30, 2024, 4:10 a.m.

  include <stdio.h>

  include <string.h>

  include <math.h>

  include <stdlib.h>

  int chan(int a[], int n){ int dem = 0; for(int i = 0; i < n; i++){ if(a[i] % 2 == 0) ++dem; } return dem; }

  int le(int a[], int n){ int dem = 0; for(int i = 0; i < n; i++){ if(a[i] % 2 != 0) ++dem; } return dem; }

  int tongchan(int a[], int n){ int s = 0; for(int i = 0; i < n; i++){ if(a[i] % 2 == 0) s += a[i]; } return s; }

  int tongle(int a[], int n){ int s = 0; for(int i = 0; i < n; i++){ if(a[i] % 2 != 0) s += a[i]; } return s; }

  int main() { int n; scanf("%d", &n); int a[n]; for(int i = 0; i < n; i++){ scanf("%d", &a[i]); } printf("%d", chan(a, n)); printf("\n%d", le(a, n)); printf("\n%d", tongchan(a, n)); printf("\n%d", tongle(a, n)); return 0; }

  This comment is hidden due to too much negative feedback. Show it anyway.