제출 #1199647

#제출 시각아이디문제언어결과실행 시간메모리
1199647edga1경주 (Race) (IOI11_race)C++20
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; int best_path(int n, int k, int h[][2], int l[]){ vector<pair<int,int>> a[n]; for(int i=0; i<n-1; i++){ a[h[i][0]].push_back({h[i][1],l[i]}); a[h[i][1]].push_back({h[i][0],l[i]}); } int m=1e9; vector<int> s(n); for(int i=0; i<n; i++){ for(int j=0; j<n; j++) s[j]=0; queue<pair<int,int>> q,q2; q.push({i,0}); int dist=0; while(!q.empty()){ pair<int,int> pos=q.front(); q.pop(); int x=pos.first, v=pos.second; s[x]=1; if(v==k){ m=min(m,dist); } if(v>=k) continue; for(int j=0; j<a[x].size(); j++){ if(!s[a[x][j].first]){ q2.push({a[x][j].first,a[x][j].second+v}); } } if(q.empty()){ swap(q,q2); dist++; } } } if(m==1e9) return -1; return m; } int main(){ int n,k; cin>>n>>k; int h[n-1][2], l[n-1]; for(int i=0; i<n-1; i++){ cin>>h[i][0]>>h[i][1]>>l[i]; } cout<<best_path(n,k,h,l); }

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cc93XIg3.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccwOoxSk.o:race.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status