제출 #552765

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
552765	2022-04-23 20:35:08	Iwanttobreakfree	Mecho (IOI09_mecho)	C++98	19 / 100	357 ms	43552 KiB

mecho

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#include <iostream>
#include <vector>
#include <queue>
using namespace std;
void bfs(queue<int>& q,vector<int>& dist,vector<vector<int>>& g,int b){
    int n=dist.size();
    while(!q.empty()){
        int u=q.front();
        q.pop();
        for(int v:g[u]){
            if(dist[v]==-1&&v!=b){
                dist[v]=dist[u]+1;
                q.push(v);
            }
        }
    }
}
bool pos(int a,int b,int mid,int s,vector<vector<int>>& g,vector<int>& dist){
    int n=dist.size();
    vector<pair<int,int>> d(n,{-1,-1});
    queue<int> q;
    q.push(a);
    //cout<<mid<<'\n';
    if(mid>=dist[a])return false;
    d[a].first=mid;
    d[a].second=-1;
    while(!q.empty()){
        int u=q.front();
        if(u==b)return true;
        q.pop();
 
 
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컴파일 시 표준 에러 (stderr) 메시지

mecho.cpp: In function 'void bfs(std::queue<int>&, std::vector<int>&, std::vector<std::vector<int> >&, int)':
mecho.cpp:6:9: warning: unused variable 'n' [-Wunused-variable]
    6 |     int n=dist.size();
      |         ^
mecho.cpp: In function 'int main()':
mecho.cpp:48:10: warning: unused variable 'c' [-Wunused-variable]
   48 |     char c;
      |          ^
mecho.cpp:83:15: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
   83 |         if(pos(u,v,mid,s,g,dist)){
      |            ~~~^~~~~~~~~~~~~~~~~~
mecho.cpp:83:15: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 19 / 100