제출 #257815

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
257815		monus1042	악어의 지하 도시 (IOI11_crocodile)	C++17	컴파일 에러	0 ms	0 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef long long ll;
typedef pair<int,int> ii;
typedef vector<ii> vii;
#define pb push_back
#define mkp make_pair
#define all(X) X.begin(), X.end()

const int MAXS = 100002;
vector< pair<int, ll> > g[MAXS];
//vi lev[MAXS];
bool vis[MAXS];
//int p[MAXS];
ll acc[MAXS];
//map <int, vi> slev; // level, nodes here

void dfs(int u){
  vis[u] = 1;
  if (g[u].size() == 1) {
    acc[u] = 0;
    return;
  }
  vector<ll> adj;//w
  for (int i=0; i<g[u].size(); i++){
    int v=g[u][i].first;
    if (!vis[v]){
      //p[v]=u;
      dfs(v);
      adj.pb(acc[v] + g[u][i].second);
    }
  }
  sort(all(adj));
  acc[u] = adj[1];
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
  for (int i=0; i<M; i++){
    g[ R[i][0] ].pb(ii( R[i][1] , L[i]));
    g[ R[i][1] ].pb(ii( R[i][0] , L[i]));
  }

  dfs(0);
  //memset(p, -1, sizeof p);
  return (int)acc[u];
}

컴파일 시 표준 에러 (stderr) 메시지

crocodile.cpp: In function 'void dfs(int)':
crocodile.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i=0; i<g[u].size(); i++){
                 ~^~~~~~~~~~~~
crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:47:19: error: 'u' was not declared in this scope
   return (int)acc[u];
                   ^