| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 488779 | Theo830 | 밀림 점프 (APIO21_jumps) | C++17 | 0 ms | 0 KiB |
이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ii,ll>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///APIO 2021 vc
#incude "jumps.h"
vector<vector<ll> >adj;
ll dist[2005][2005];
void bfs(ll s){
queue<ll>q;
q.push(s);
dist[s][s] = 0;
while(!q.empty()){
ll x = q.front();
q.pop();
for(auto y:adj[x]){
if(dist[s][y] == INF){
dist[s][y] = 1 + dist[s][x];
q.push(y);
}
}
}
}
void init(int N, std::vector<int> H) {
adj.assign(N+5,vector<ll>());
f(i,0,N){
f(j,i+1,N){
if(H[j] > H[i]){
adj[i].pb(j);
break;
}
}
ll j = i - 1;
while(j >= 0){
if(H[j] > H[i]){
adj[i].pb(j);
break;
}
j--;
}
}
f(i,0,N){
f(j,0,N){
dist[i][j] = INF;
}
}
f(i,0,N){
bfs(i);
}
}
int minimum_jumps(int A, int B, int C, int D) {
ll ans = INF;
f(s,A,B+1){
f(e,C,D+1){
ans = min(ans,dist[s][e]);
}
}
if(ans == INF){
ans = -1;
}
return ans;
}