제출 #374190

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
374190		Iwanttobreakfree	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	0 / 100	1 ms	492 KiB

skyscraper

#include <iostream>
#include <vector>
#include <queue>
using namespace std;
int main(){
	cin.tie(NULL);
	ios::sync_with_stdio(false);
	int N,M,pos,S,buscar,b;
	queue <pair<int,int> > varioinicio;
	cin>>N>>M;
	vector<pair<int,int> > doge(M);
	vector<int> distancia(N,1e9);
	for(int i=0;i<M;i++){
		cin>>pos>>S;
		if(i==0)b=pos;
		if(i==1)buscar=pos;
		doge[i]=make_pair(pos,S);
		if(pos==b)varioinicio.push(doge[i]);
	}
	queue <pair<pair<int,int>,int> > q;
	q.push(make_pair(doge[0],0));
	while(!varioinicio.empty()){
		q.push(make_pair(varioinicio.front(),0));
		varioinicio.pop();
	}
	distancia[0]=0;
	while(!q.empty()){
		int p=q.front().first.first;
		int mov=q.front().first.second;
		int jump=q.front().second;
		q.pop();
		int po=p;
		int mo=mov;
		int jum=jump;
	while(p){
			if(distancia[p]>jump){
				distancia[p]=jump;
				//cout<<distancia[p]<<' '<<p<<' ';
				for(int i=0;i<M;i++)if(doge[i].first==p&&p!=buscar)q.push(make_pair(doge[i],jump));
			}
			p-=mov;
			jump++;
		}
	while(po<N){
		if(distancia[po]>jum){
				distancia[po]=jum;
				//cout<<distancia[po]<<' '<<po<<' ';
				for(int i=0;i<M;i++)if(doge[i].first==po&&po!=buscar)q.push(make_pair(doge[i],jum));
			}
		jum++;
		po+=mo;
	}
}
if(distancia[buscar]==1e9)cout<<-1;
else cout<<distancia[buscar];
}

컴파일 시 표준 에러 (stderr) 메시지

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:54:20: warning: 'buscar' may be used uninitialized in this function [-Wmaybe-uninitialized]
   54 | if(distancia[buscar]==1e9)cout<<-1;
      |                    ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 12
• Subtask 3: 0 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43