Submission #1870015

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define X first
#define Y second

const int mo=1e9+7;

int n,m,dp[305][305][305],lim[305][2];
bool vis[305][305][305];

int main()
{
#ifdef h10
	freopen("E.in","r",stdin);
	freopen("E.out","w",stdout);
#endif
	int i,j,k,l,r,x;
	scanf("%d%d",&n,&m);
	memset(vis,1,sizeof(vis));
	for (i=1;i<=m;i++)
	{
		scanf("%d%d%d",&l,&r,&x);
		if (x==1)
		{
			for (j=0;j<=n;j++)
			for (k=0;k<=n;k++)
				vis[r][j][k]&=j<l;
		}
		if (x==2)
		{
			for (j=0;j<=n;j++)
			for (k=0;k<=n;k++)
				vis[r][j][k]&=j>=l&&k<l;
		}
		if (x==3)
		{
			for (j=0;j<=n;j++)
			for (k=0;k<=n;k++)
				vis[r][j][k]&=k>=l;
		}
	}
	dp[0][0][0]=1;
	for (i=0;i<n;i++)
	for (j=0;j<=i;j++)
	for (k=0;k<=j;k++)
	{
		if (dp[i][j][k]&&vis[i][j][k])
		{
			(dp[i+1][j][k]+=dp[i][j][k])%=mo;
			(dp[i+1][i][j]+=dp[i][j][k])%=mo;
			(dp[i+1][i][k]+=dp[i][j][k])%=mo;
		}
	}
	int Ans=0;
	for (j=0;j<=n;j++)
	for (k=0;k<=j;k++)
		if (vis[n][j][k]) (Ans+=dp[n][j][k])%=mo;
	printf("%d\n",Ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:18:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:22:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&l,&r,&x);
                           ^

Judge Result