提出 #43546828

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ソースコード 拡げる

// LUOGU_RID: 115425625
#include<bits/stdc++.h>
#define LL long long
#define DB double
#define MOD 998244353
#define ls(x) x << 1
#define rs(x) x << 1 | 1
#define lowbit(x) x & (-x)
#define PII pair<int, int>
#define MP make_pair
#define VI vector<int>
#define VII vector<int>::iterator
#define EB emplace_back
#define SI set<int>
#define SII set<int>::iterator
#define QI queue<int>
using namespace std;
template<typename T> void chkmn(T &a, const T &b) { (a > b) && (a = b); }
template<typename T> void chkmx(T &a, const T &b) { (a < b) && (a = b); }
int inc(const int &a, const int &b) { return a + b >= MOD ? a + b - MOD : a + b; }
int dec(const int &a, const int &b) { return a - b < 0 ? a - b + MOD : a - b; }
int mul(const int &a, const int &b) { return 1LL * a * b % MOD; }
void Inc(int &a, const int &b) { ((a += b) >= MOD) && (a -= MOD); }
void Dec(int &a, const int &b) { ((a -= b) < 0) && (a += MOD); }
void Mul(int &a, const int &b) { a = 1LL * a * b % MOD; }
void Sqr(int &a) { a = 1LL * a * a % MOD; }
int qwqmi(int x, int k = MOD - 2)
{
	int res = 1;
	while(k)
	{
		if(k & 1) Mul(res, x);
		Sqr(x), k >>= 1;
	}
	return res;
}
const int N = 505;
const int M = 11;
int n, d, a[N];
int f[N][1 << M], ans;
int maxS;
int main()
{
	scanf("%d %d", &n, &d);
	maxS = 1 << (2 * d + 1);
	for(int i = 1; i <= n; ++i)
		scanf("%d", &a[i]);
	f[0][0] = 1;
	for(int i = 1; i <= n; ++i)
	{
		for(int S = 0; S < maxS; ++S)
		{
			int T = S >> 1;
			for(int j = -d; j <= d; ++j)
			{
				if(i + j < 1 || i + j > n) continue;
				if((T >> (d + j)) & 1) continue;
				if(a[i] != -1 && a[i] != i + j) continue;
				Inc(f[i][T | (1 << (d + j))], f[i - 1][S]);
			}
		}
	}
	printf("%d\n", f[n][(1 << (d + 1)) - 1]);
	return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:44:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   44 |  scanf("%d %d", &n, &d);
      |  ~~~~~^~~~~~~~~~~~~~~~~
./Main.cpp:47:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   47 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~

ジャッジ結果