Submission #817912

#TimeUsernameProblemLanguageResultExecution timeMemory
817912OzyTravelling Merchant (APIO17_merchant)C++17
0 / 100
14 ms1876 KiB
#include <bits/stdc++.h> using namespace std; #define lli long long int #define debug(a) cout << #a << " = " << a << endl #define debugsl(a) cout << #a << " = " << a << ", " #define rep(i,a,b) for(int i = (a); i <= (b); i++) #define repa(i,a,b) for(int i = (a); i >= (b); i--) #define pll pair<lli,lli> #define MAX 100 #define MAX_k 1000 //para el vector de hijos #define des first #define w second //para la funcion de solve #define id second lli n,m,k,a,b,c,res; lli camino_op[MAX+2][MAX+2]; lli compra[MAX+2][MAX_k+2], venta[MAX+2][MAX_k+2];//tienda y producto vector<pll> hijos[MAX+2]; void solve(lli pos) { priority_queue<pll> cola; cola.push({0,pos}); rep(i,1,n) camino_op[pos][i] = -1; pll act; while (!cola.empty()) { act = cola.top(); cola.pop(); if (camino_op[pos][act.id] >= 0) continue; camino_op[pos][act.id] = act.first; for(auto h : hijos[pos]) { if(camino_op[pos][h.des] >= 0) continue; cola.push({act.first+h.w,h.des}); } } } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cin >> n >> m >> k; rep(i,1,n) { rep(j,1,k*2) { if(j&1) { a= (j/2)+1; cin >> compra[i][a] >> venta[i][a]; } } } rep(i,1,m) { cin >> a >> b >> c; hijos[a].push_back({b,c}); } //camino minimo de todos a todos rep(i,1,n) solve(i); //tengo que ver por cada producto que es lo que mas me combiene res = 0; rep(prod,1,k){ if (compra[1][prod] == -1) continue; rep(i,2,n) { if(venta[i][prod] == -1) continue; if (camino_op[1][i] == -1 || camino_op[i][1] == -1) continue; a = compra[1][prod]- venta[i][prod]; b = camino_op[1][i] + camino_op[i][1]; a /= b; res = max(res,a); } } cout << res; return 0; }
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