Submission #1776409

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Source Code Expand

#include <iostream>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <time.h>
#include <stdlib.h>
#include <string>
#include <bitset>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <algorithm>
#include <sstream>
#include <stack>
#include <iomanip>
using namespace std;
#define pb push_back
#define mp make_pair
typedef pair<int,int> pii;
typedef long long ll;
typedef double ld;
typedef vector<int> vi;
#define fi first
#define se second
#define fe first
#define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);}
#define Edg int M=0,fst[SZ],vb[SZ],nxt[SZ];void ad_de(int a,int b){++M;nxt[M]=fst[a];fst[a]=M;vb[M]=b;}void adde(int a,int b){ad_de(a,b);ad_de(b,a);}
#define Edgc int M=0,fst[SZ],vb[SZ],nxt[SZ],vc[SZ];void ad_de(int a,int b,int c){++M;nxt[M]=fst[a];fst[a]=M;vb[M]=b;vc[M]=c;}void adde(int a,int b,int c){ad_de(a,b,c);ad_de(b,a,c);}
#define es(x,e) (int e=fst[x];e;e=nxt[e])
#define esb(x,e,b) (int e=fst[x],b=vb[e];e;e=nxt[e],b=vb[e])
int n,m,k,fb[22][22],s[2][1<<21];
const ll MOD=1e9+7; 
int main()
{
	scanf("%d%d%d",&n,&m,&k); --n;
	for(int i=1,a,b,c;i<=k;++i)
		scanf("%d%d%d",&a,&b,&c),fb[a][b-1]|=1<<(!c);
	s[0][0]=1; int x=0;
	for(int i=1;i<=m;++i)
	{
		for(int j=0;j<n;++j)
		{
			x^=1; memset(s[x],0,sizeof s[x]);
			for(int r=0;r<(1<<n);++r)
			{
				bool a=(r>>j)&1;
				for(int w=a;w<=1;++w)
				{
					if(fb[i][j]&(1<<w)) continue;
					register int g,tt;
					if(w==a) g=r;
					else
					{
						g=r|(1<<j),tt=r>>j;
						if(tt) g^=(tt&-tt)<<j;
					}
					s[x][g]+=s[!x][r];
					(s[x][g]>=MOD)?(s[x][g]-=MOD):0;
				}
			}
		}
	}
	ll ans=0;
	for(int r=0;r<(1<<n);++r) ans+=s[x][r];
	printf("%lld\n",ans%MOD);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:36:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&m,&k); --n;
                          ^
./Main.cpp:38:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&a,&b,&c),fb[a][b-1]|=1<<(!c);
                                               ^

Judge Result