Submission #32279

#	Time	Username	Problem	Language	Result	Execution time	Memory
32279		cscandkswon	Kas (COCI17_kas)	C++14	100 / 100	383 ms	394092 KiB

kas

#include <cstdio>
#include <cstdlib>
#include <cstring>
const int MAXN = 503, INF=1e9, ZERO=100000;

int N, A[MAXN], S, ans, D[MAXN][200005];

inline int max(int a, int b) { return (a > b) ? a : b; }

int func(int a, int d) {
	if (abs(d - ZERO) > (S / 2)) return -INF;
	if (a == N) {
		if (d == ZERO) return D[a][d] = 0;
		return D[a][d] = -INF;
	}
	if (D[a][d] != -1) return D[a][d];
	D[a][d] = max(func(a + 1, d), max(func(a + 1, d + A[a]) + A[a], func(a + 1, d - A[a])));
	return D[a][d];
}

int main() {
	memset(D, -1, sizeof D);
	int i;
	scanf("%d", &N);
	for (i = 0; i < N; i++) 
		scanf("%d", A + i), S+=A[i];
	ans = func(0, ZERO);
	printf("%d", ans + (S - ans * 2));
	return 0;
}

Compilation message (stderr)

kas.cpp: In function 'int main()':
kas.cpp:24:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
kas.cpp:26:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", A + i), S+=A[i];
                              ^

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10