#include<iostream> using namespace std; int main() { int N = 0; int arry[10000] = { 0 }; int count_A1 = 0,flag=1,count_A2=0,count_A3=0,count_A4=0,count_A5=0;//A2的模式切换标志 ,为0,:相减,为1:相加 int sum_A2 = 0; double sum_A4 = 0; int max_A5 = 0; cin >> N; while (N > 1000 || N < 0) { cin >> N; } for (int i = 0; i < N; i++) { cin >> arry[i]; } //能被5整除的数字中有偶数的和 for (int i = 0; i < N; i++) { //A1的判断 if (((arry[i] % 5) == 0) && ((arry[i] % 2) == 0)) { count_A1 += arry[i]; } //A2的判断 if ((arry[i] % 5) == 1 && flag) { sum_A2 += arry[i]; flag = 0; count_A2++; } else if ((arry[i] % 5) == 1 && !flag) { sum_A2 -= arry[i]; flag = 1; count_A2++; } //A3的判断 if ((arry[i] % 5) == 2) { count_A3++; } //A4的判断 if ((arry[i] % 5) == 3) { sum_A4 += arry[i]; count_A4++; } //A5的判断 if (arry[i] >= max_A5&&(arry[i]%5)==4) { max_A5 = arry[i]; count_A5++; } } //A1的输出 if (count_A1 == 0) { cout << 'N'; cout << " "; } else { cout << count_A1 << " "; } //A2的输出 if (count_A2 == 0) { cout << 'N'; cout << " "; } else { cout << sum_A2 << " "; } //A3的输出 if (count_A3 == 0) { cout << 'N'; cout << " "; } else { cout << count_A3 << " "; } //A4的输出 if (count_A4 == 0) { cout << 'N'; cout << " "; } else { double avg = 0; avg = sum_A4 / count_A4; avg = (int)(avg * 10 + 0.5) * 0.1; cout << avg << " "; } //A5的输出 if (count_A5 == 0) { cout<< 'N'; } else { cout<< max_A5; } return 0; }