Submission #563105

#	Time	Username	Problem	Language	Result	Execution time	Memory
563105		khangal	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	100 / 100	698 ms	41944 KiB

skyscraper

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef double db;
typedef vector<long long> vl;
typedef pair<long long, long long > pl;
const int N = 1e6 + 1;
#define po pop_back
#define pb push_back
#define mk make_pair
#define lw lower_bound
#define up upper_bound
#define ff first
#define ss second
#define boost ios_base::sync_with_stdio(); cin.tie(0); cout.tie(0);
#define MOD 1000000007
#define MAX 1e18    
#define MIN -1e18
#define per(i,a,b) for(ll i=b;i>=a;i--)
#define con continue
#define freopen freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define PI 3.14159265358979323846264338327950288419716939937510582097494459230781640628
// typedef tree<ll , null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
// template< typename T>
// using indexed_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
ll n, m, mid, res,pos, mn, mx, sum, h1, h2, arr[3234567],arr1[1234567],k, i, j, h, a, x, y, z,par[1234567];
bool used[1234567];
ll tp[1234567];
ll dx[4]={-1,1,0,0},dy[4]={0,0,-1,1},c1[123][123];
//ll jump[22][223456];
//ll lvl[1234567];
//ll bit[1234567];
//ll timer;
//ll st[1234567],endd[1234567];
//ll dp[5005][5005];
vl dog[1234567];
ll dist[1234567];
priority_queue<pl> pq;
void go(ll node){
    used[node]=1;
    for(auto u:dog[node]){
        for(int i=node+u,a=1;i<n;i+=u,a++){
            if(dist[i] > dist[node] + a){
                dist[i] = dist[node]+a;
                pq.push({-dist[i] , i});
            }
        }
        for(int i=node-u,a=1;i>=0;i-=u,a++){
            if(dist[i] > dist[node] + a){
                dist[i] = dist[node]+a;
                pq.push({-dist[i] , i});
            }
        }
        
    }
}
class A {  
public :
    static void funcA() {
        cin>>n>>m;
        ll st,en,b,p;
        cin>>st>>p;
        dog[st] . pb(p);
        cin>>en>>p;
        dog[en] . pb(p);
        m-=2;
        while(m--){
            cin>>b>>p;
            dog[b].pb(p);
        }
        for(int i=0;i<=1e6;i++)dist[i]=MAX;
        pq.push({0,st});
        dist[st]=0;
        while(pq.size()>0){
            ll a = pq.top().ss;
            pq.pop();
            if(a==en){
                cout<<dist[en];
                exit(0);
            }
            if(used[a]==0){
                go(a);
            }
        }
        cout<<-1;
    }
}lol;
void solve() {
    A::funcA();
}
int main() {
    ll T = 1;
    //cin>>T;
    boost;
    while (T--) {   
        solve();
    }
}
    

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 21 / 21
• Subtask 5: 43 / 43