제출 #879959

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
879959		JakobZorz	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	100 / 100	618 ms	4220 KiB

skyscraper

#include<iostream>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
#include<limits.h>
#include<math.h>
#include<map>
#include<set>
#include<unordered_map>
#include<unordered_set>
#include<iomanip>
#include<cstring>
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
using namespace std;
//const int MOD=1e9+7;
//typedef pair<ll,ll>Point;
//typedef pair<ll,ll>Line;
//#define x first
//#define y second

int n,m;
int pos[30000];
int gap[30000];
vector<int>gaps[30000];
int dist[30000];
int distv[30000];

void solve(){
    for(int i=0;i<30000;i++){
        dist[i]=1000000;
        distv[i]=1000000;
    }
    cin>>n>>m;
    for(int i=0;i<m;i++){
        cin>>pos[i]>>gap[i];
        gaps[pos[i]].push_back(gap[i]);
    }
    dist[pos[0]]=0;
    
    
    priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>>q;
    q.push({0,pos[0]});
    
    while(!q.empty()){
        auto [d,pos]=q.top();
        q.pop();
        
        if(d!=dist[pos]||distv[pos]==dist[pos])
            continue;
        
        distv[pos]=dist[pos];
        
        for(int g:gaps[pos]){
            for(int i=1;pos+g*i<n;i++){
                if(dist[pos+g*i]>dist[pos]+i){
                    dist[pos+g*i]=dist[pos]+i;
                    q.push({dist[pos+g*i],pos+g*i});
                }
            }
            
            for(int i=1;pos-g*i>=0;i++){
                if(dist[pos-g*i]>dist[pos]+i){
                    dist[pos-g*i]=dist[pos]+i;
                    q.push({dist[pos-g*i],pos-g*i});
                }
            }
        }
    }
    
    
    int res=dist[pos[1]];
    if(res==1000000)
        res=-1;
    cout<<res<<"\n";
}

int main(){
    ios::sync_with_stdio(false);cout.tie(NULL);cin.tie(NULL);
    //freopen("bank.in","r",stdin);freopen("bank.out","w",stdout);
    int t=1;//cin>>t;
    while(t--)solve();
    return 0;
}

/*
 
5 3
0 2
1 1
4 1
 
 */

컴파일 시 표준 에러 (stderr) 메시지

skyscraper.cpp: In function 'void solve()':
skyscraper.cpp:48:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   48 |         auto [d,pos]=q.top();
      |              ^

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