Submission #1679606

---

Source Code Expand

#include<bits/stdc++.h>
#define mod 1000000007
#define N 309
#define ad(x,y) (x=(x+(y))%mod)
using namespace std;

int n,m,fst[N],pnt[N],len[N],nxt[N],dp[N][N][N]; bool bo[N][N][N];
int main(){
	scanf("%d%d",&n,&m);
	int i,j,k,l,x,y;
	for (i=1; i<=m; i++){
		scanf("%d%d",&x,&y);
		pnt[i]=x; nxt[i]=fst[y]; fst[y]=i;
		scanf("%d",&len[i]);
	}
	for (i=0; i<=n; i++)
		for (j=0; j<=n; j++)
			for (k=0; k<=n; k++){
				x=max(max(i,j),k);
				for (l=fst[x]; l; l=nxt[l]){
					y=pnt[l];
					if ((i>=y)+(j>=y)+(k>=y)!=len[l]) break;
				}
				bo[i][j][k]=(!l);
			}
	dp[0][0][0]=1;
	for (i=0; i<n; i++)
		for (j=0; j<n; j++)
			for (k=0; k<n; k++) if (dp[i][j][k] && bo[i][j][k]){
				x=max(max(i,j),k);
				ad(dp[x+1][j][k],dp[i][j][k]);
				ad(dp[i][x+1][k],dp[i][j][k]);
				ad(dp[i][j][x+1],dp[i][j][k]);
			}
	int ans=0;
	for (i=0; i<=n; i++)
		for (j=0; j<=n; j++)
			for (k=0; k<=n; k++) if (i==n || j==n || k==n)
				if (bo[i][j][k]) ad(ans,dp[i][j][k]);
	printf("%d\n",ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:12:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&x,&y);
                      ^
./Main.cpp:14:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&len[i]);
                      ^

Judge Result