Submission #54663

#	Time	Username	Problem	Language	Result	Execution time	Memory
54663		dennisstar	Tents (JOI18_tents)	C++11	0 / 100	5 ms	2724 KiB

tents

#include <bits/stdc++.h>
#define MOD 1000000007
int H, W;
long long Dp[3010][3010];
int main()
{
	scanf("%d%d", &H, &W);
	int i, j;
	for (i=0; i<=H; i++) Dp[i][0]=1;
	for (i=0; i<=W; i++) Dp[0][i]=1;
	for (i=1; i<=H; i++) Dp[i][1]=4*i+i*(i-1)/2+1;
	for (j=1; j<=W; j++) Dp[1][j]=4*j+j*(j-1)/2+1;
	for (i=2; i<=H; i++) {
		for(j=2; j<=W; j++) {
			Dp[i][j]=Dp[i-1][j-1]*5;
			Dp[i][j]+=Dp[i-1][j-2]*(j-1)*5+Dp[i-2][j-1]*(i-1)*5; //1,0 0,1
			Dp[i][j]+=Dp[i-2][j-2]*(j-1)*(i-1)*2; //1,0 0,1
			if (i>=3) Dp[i][j]+=Dp[i-3][j-1]*(i-1)*(i-2)/2; //2,0
			if (j>=3) Dp[i][j]+=Dp[i-1][j-3]*(j-1)*(j-2)/2; //0,2
			Dp[i][j]+=Dp[i-2][j-2]*16*(i-1)*(j-1); //1,1
			if (i>=3) Dp[i][j]+=Dp[i-3][j-2]*(i-1)*(j-1)*(i-2)*4; //1,1
			if (j>=3) Dp[i][j]+=Dp[i-2][j-3]*(j-1)*(i-1)*(j-2)*4; //1,1
			if (i>=3&&j>=3) Dp[i][j]+=Dp[i-3][j-3]*((i-1)*(j-1)*(i-2)*(j-2)%MOD); //1,1
			if (i>=3) Dp[i][j]+=Dp[i-3][j-2]*(i-1)*(i-2)*(j-1)*2; //2,1
			if (i>=4) Dp[i][j]+=Dp[i-4][j-2]*((i-1)*(i-2)/2*(j-1)*(i-3)%MOD); //2,1
			if (j>=3) Dp[i][j]+=Dp[i-2][j-3]*(j-1)*(j-2)*(i-1)*2; //1,2
			if (j>=4) Dp[i][j]+=Dp[i-2][j-4]*((j-1)*(j-2)/2*(i-1)*(j-3)%MOD); //1,2
			if (i>=3&&j>=3) Dp[i][j]+=Dp[i-3][j-3]*((i-1)*(j-1)*(i-2)*(j-2)/4%MOD); //2,2
			Dp[i][j]%=MOD;
		}
	}
	printf("%d", Dp[H][W]-1);
	return 0;
}

Compilation message (stderr)

tents.cpp: In function 'int main()':
tents.cpp:32:25: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%d", Dp[H][W]-1);
               ~~~~~~~~~~^
tents.cpp:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &H, &W);
  ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 48
• Subtask 2: 0 / 52