Submission #1216381

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<cstring>
#include<vector>
#include<queue>
#include<set>
#include<map>
#include<stack>
#include<bitset>
#include<ext/pb_ds/priority_queue.hpp>
using namespace std;

const int maxn = 5005;
const int maxm = 1E4 + 10;
typedef long long LL;
const LL mo = 1000000007;

int n,k,x,tail,Ans = 1,s[maxn],f[maxn][maxm];

inline int Mul(const LL &x,const LL &y) {return x * y % mo;}
inline int Add(const int &x,const int &y) {return x + y < mo ? x + y : x + y - mo;}
inline int Dec(const int &x,const int &y) {return x - y >= 0 ? x - y : x - y + mo;}

int main()
{
	#ifdef DMC
		freopen("DMC.txt","r",stdin);
	#endif
	
	f[0][1] = 1; cin >> n >> k >> x;
	for (int i = 0; i < k; i++) scanf("%d",&s[i]);
	for (int i = 1; i < k; i++) tail = max(tail,s[i] - s[i - 1]);
	for (int i = 1; i <= 2 * x; i++)
	{
		int sum = 0,Max = i + (i & 1);
		for (int j = 1; j <= tail; j++)
		{
			sum = Add(sum,f[i - 1][j - 1]);
			if (j - Max - 1 >= 0) sum = Dec(sum,f[i - 1][j - Max - 1]);
			f[i][j] = sum; if (i + 1 >= j) f[i][j] = Add(f[i][j],1);
		}
	}
	for (int i = 1; i < k; i++) Ans = Mul(Ans,f[2 * x - 2 * i + 1][s[i] - s[i - 1]]);
	cout << Ans << endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:33:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 0; i < k; i++) scanf("%d",&s[i]);
                                               ^

Judge Result