#include #include #include #include typedef long long ll; struct Edge{ int to; ll cost; }; int N, M; std::vector G[101], rG[101]; std::vector order; bool used[101]; ll d[101]; void dfs(int u){ used[u] = true; for(auto e : G[u]){ if(!used[e.to]){ dfs(e.to); } } order.push_back(u); } int main(){ scanf("%d %d", &N, &M); for(int i=0;i=0;i--){ for(auto e : rG[order[i]]){ d[order[i]] += d[e.to] * e.cost; } } for(int i=1;i