CodeForces Gym 100803A 模拟，贪心

模拟，贪心的搞，从第一位开始，如果需要交换就从后面找个最近的交换就行

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;
#define ll long long
#define maxn 100005
int N, M;
int s1[20];
int s2[20];
int s3[20];
int main()
{
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	scanf("%d%d", &N, &M);
	int zerosum = 0;
	int oddsum = 0, evensum = 0;
	for (int i = 0; i < N; ++i)
	{
		scanf("%d", &s1[i]);
		if (s1[i] == 0)
			++zerosum;
	}
	for (int i = 0; i < M; ++i)
	{
		scanf("%d", &s2[i]);
		if ((i & 1) == 1)
			oddsum += s2[i];
		else
			evensum += s2[i];
	}
	for (int i = 0; i < N; ++i)
		s3[i] = s1[i];
	int ans1 = 100000000, ans2 = 100000000;
	if (oddsum == zerosum)
	{
		ans1 = 0;
		bool isodd = true;
		int lastpos = 0;
		for (int i = 0; i < M; ++i)
		{
			if ((i & 1) == 1)
				isodd = true;
			else
				isodd = false;
			if (isodd)
			{
				for (int j = 0; j < s2[i]; ++j)
				{
					if (s3[lastpos + j] != 0)
					{
						for (int k = lastpos + j + 1; k < N; ++k)
						{
							if (s3[k] == 0)
							{
								swap(s3[lastpos + j], s3[k]);
								ans1 += (k - lastpos - j);
								break;
							}
						}
					}
				}
			}
			else
			{
				for (int j = 0; j < s2[i]; ++j)
				{
					if (s3[lastpos + j] != 1)
					{
						for (int k = lastpos + j + 1; k < N; ++k)
						{
							if (s3[k] == 1)
							{
								swap(s3[lastpos + j], s3[k]);
								ans1 += (k - lastpos - j);
								break;
							}
						}
					}
				}
			}
			lastpos += s2[i];
		}
	}
	for (int i = 0; i < N; ++i)
		s3[i] = s1[i];
	if (zerosum == evensum)
	{
		ans2 = 0;
		bool iseven = true;
		int lastpos = 0;
		for (int i = 0; i < M; ++i)
		{
			if ((i & 1) == 0)
				iseven = true;
			else
				iseven = false;
			if (iseven)
			{
				for (int j = 0; j < s2[i]; ++j)
				{
					if (s3[lastpos + j] != 0)
					{
						for (int k = lastpos + j + 1; k < N; ++k)
						{
							if (s3[k] == 0)
							{
								swap(s3[lastpos + j], s3[k]);
								ans2 += (k - lastpos - j);
								/*printf("%d %d ", lastpos + j, k);
								printf("even %d\n", k - lastpos - j);
								for (int t = 0; t < N; ++t)
									printf("%d ", s3[t]);
								printf("\n");*/
								break;
							}
						}
					}
				}
			}
			else
			{
				for (int j = 0; j < s2[i]; ++j)
				{
					if (s3[lastpos + j] != 1)
					{
						for (int k = lastpos + j + 1; k < N; ++k)
						{
							if (s3[k] == 1)
							{
								swap(s3[lastpos + j], s3[k]);
								ans2 += (k - lastpos - j);
								/*printf("%d %d ", lastpos + j, k);
								printf("odd %d\n", k - lastpos - j);
								for (int t = 0; t < N; ++t)
									printf("%d ", s3[t]);
								printf("\n");*/
								break;
							}
						}
					}
				}
			}
			lastpos += s2[i];
		}
	}
	//printf("ans1 %d ans2 %d\n", ans1, ans2);
	printf("%d\n", min(ans1, ans2));
	//system("pause");
	//while (1);
	return 0;
}