#include #include #include #include #include #include #include #include #include #include #include #include typedef long long ll; using namespace std; #define mod 1000003 #define INF 10000000 #define LLINF 2000000000000000000LL #define SIZE 10000 int main(){ int n,m,p,q,r,in[100]={0},ans[100]={0},dp[100]={0}; vector > way[100]; queue que; scanf("%d%d",&n,&m); for(int i=0;i=0;i--){ if(in[i]==0) que.push(i); } dp[n-1]=1; while(que.size()){ int now = que.front(); que.pop(); for(int i=0;i