| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 722038 | Zflop | Crocodile's Underground City (IOI11_crocodile) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
using str = string; // yay python!
using ld = long double; // or double, if TL is tight
using ll = long long;
using int64 = ll;
using db = double;
using ull = unsigned long long;
#define ch() getchar()
#define pc(x) putchar(x)
#define tcT template<class T
#define tcTU tcT, class U
tcT> using V = vector<T>;
tcT, size_t SZ> using AR = array<T,SZ>;
using vi = V<int>;
using vb = V<bool>;
using vpi = V<pair<int,int>>;
using vvi = V<vi>;
using vl = V<ll>;
using vd = V<ld>;
using vstr = V<str>;
// pairs
#define mp make_pair
#define pi pair <int, int>
#define f first
#define s second
// loops
#define F0R(i, a, b) for (int i=a; i<b;++i)
#define FOR(i, a) for (int i=0; i<a;++i)
#define FORn(i, a) for (int i=1; i<=a;++i)
#define ROF(i,a) for(int i=a-1; i >= 0;--i)
#define R0F(i,a,b) for(int i=a; i > b;--i)
#define ROFn(i,a) for(int i=a; i > 0;--i)
#define rep(a) F0R(_, a)
#define trav(i,x) for(auto& i:x)
// vectors
#define lb lower_bound
#define ub upper_bound
#define SUM(v) accumulate(all(v), 0LL)
#define MN(v) *min_element(all(v))
#define MX(v) *max_element(all(v))
#define UNIQUE(a) (a).erase(unique((a).begin(),(a).end()),(a).end())
#define eb emplace_back
#define ft front()
#define bk back()
#define ins insert
#define pf push_front
#define pb push_back
#define emt empty()
#define rsz resize
#define all(x) begin(x), end(x)
#define sor(x) sort(all(x))
#define rev(x) reverse(all(x))
#define sz(x) (int)(x).size()
#define rall(x) x.rbegin(), x.rend()
#define AR array
const ll inf = (ll)1e14;
int travel_plan(int N, int M, int K,int in[][2], int tm[], int r[]);
int travel_plan(int N, int M, int K,int in[][2], int tm[], int r[]){
V<vpi> A(N + 1);
FOR(i,M){
int a = in[i][0];
int b = in[i][1];
int c = tm[i];
A[a].pb({b,c});
A[b].pb({a,c});
}
auto djs = [&] (){
V<pair<ll,ll>> cost(N,{inf,inf});
priority_queue<vl,V<vl>,greater<vl>>pq;
FOR(i,K){
cost[r[i]] = {0,0};
pq.push({0,0,r[i]});
}
while(sz(pq)){
auto node = pq.top();
ll a = node[0];
ll b = node[1];
ll c = node[2];
pq.pop();
if(cost[c].f < a || a == inf) continue;
if(cost[c].f == a && cost[c].s < b) continue;
trav(x,A[c])
if(cost[x.f].s > a + x.s){
cost[x.f].f = cost[x.f].s;
cost[x.f].s = a + x.s;
pq.push({cost[x.f].f,cost[x.f].s,x.f});
}
else if(cost[x.f].f > a + x.s){
cost[x.f].f = a + x.s;
pq.push({cost[x.f].f,cost[x.f].s,x.f});
}
}
return cost[0].f;
};
return djs();
}