제출 #1050131

#제출 시각아이디문제언어결과실행 시간메모리
1050131idas기지국 (IOI20_stations)C++17
0 / 100
497 ms1196 KiB
#include "stations.h" #include "bits/stdc++.h" #define FOR(i, begin, end) for(int i=(begin); i<(end); i++) #define sz(x) ((int)((x).size())) #define pb push_back using namespace std; typedef vector<int> vi; const int N=1e3+10; int in[N], dp[N], id; vi ad[N]; void dfs(int u, int pst=-1) { if(dp[u]&1^1) in[u]=id++; for(auto it : ad[u]) { if(it==pst) continue; dp[it]=dp[u]+1; dfs(it, u); } if(dp[u]&1) in[u]=id++; } std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) { FOR(i, 0, n) ad[i].clear(), dp[i]=in[i]=0; FOR(i, 0, n-1) { ad[u[i]].pb(v[i]), ad[v[i]].pb(u[i]); } id=0; dfs(0); vi b(n); FOR(i, 0, n) b[i]=in[i]; return b; } int find_next_station(int s, int t, std::vector<int> c) { if(s<c[0]) { if(t<s) return c[sz(c)-1]; FOR(i, 0, sz(c)) { if(t<=c[i]) return c[i]; } assert(false); } else { if(t>s) return c[0]; for(int i=sz(c)-1; i>=0; i--) { if(t>=c[i]) return c[i]; } assert(false); } } /* 2 5 10 0 1 1 2 1 3 2 4 2 2 0 1 1 3 3 5 10 0 1 1 2 2 3 3 4 1 4 0 2 */

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:15:10: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   15 |  if(dp[u]&1^1) in[u]=id++;
      |     ~~~~~^~
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