Submission #1213244

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Source Code Expand

#include <cstdio>
#include <algorithm>
#include <cstring>

#define maxn 20
int a[maxn], b[maxn];
typedef long long ll;
#define cmax(_a, _b) (_a < (_b) ? _a = (_b) : 0)
#define cmin(_a, _b) (_a > (_b) ? _a = (_b) : 0)
int main()
{
	int n, k; scanf("%d%d", &n, &k);
	ll ans = ~0ULL >> 1;
	for (int i = 0; i < n; ++i) scanf("%d", &a[i]);
	for (int S = 0, _ = 1 << n; S < _; ++S)
	{
		memcpy(b, a, n << 2);
		int cnt = 0;
		ll cost = 0, maxx = -0x7fffffff;
		for (int i = 0; i < n; ++i)
		{
			if ((S & (1 << i)) && b[i] <= maxx)
				cost += maxx - b[i] + 1, b[i] = maxx + 1;
			cmax(maxx, b[i]) ? ++cnt : 0;
		}
		cnt >= k ? cmin(ans, cost) : 0;
	}
	printf("%lld\n", ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int n, k; scanf("%d%d", &n, &k);
                                 ^
./Main.cpp:14:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 0; i < n; ++i) scanf("%d", &a[i]);
                                                ^

Judge Result