#include <stdio.h> #define MAX 1010 int tab[MAX]; int main() { int n, a; scanf("%d", &n); while (n--) { scanf("%d", &a); tab[a]++; } int answer = 0; int left = 0; for (int i = MAX - 1; i >= 0; --i) { if (i % 2 == 0) { answer += tab[i] * i; } else if (tab[i]) { if (left > 0) { tab[i]--; answer += i + left; left = 0; } answer += (tab[i] - tab[i] % 2) * i; if (tab[i] % 2 == 1) { left = i; } } } if (answer > 0) printf("%d\n", answer); else printf("NIESTETY\n"); return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #include <stdio.h> #define MAX 1010 int tab[MAX]; int main() { int n, a; scanf("%d", &n); while (n--) { scanf("%d", &a); tab[a]++; } int answer = 0; int left = 0; for (int i = MAX - 1; i >= 0; --i) { if (i % 2 == 0) { answer += tab[i] * i; } else if (tab[i]) { if (left > 0) { tab[i]--; answer += i + left; left = 0; } answer += (tab[i] - tab[i] % 2) * i; if (tab[i] % 2 == 1) { left = i; } } } if (answer > 0) printf("%d\n", answer); else printf("NIESTETY\n"); return 0; } |