제출 #1328726

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1328726		Mamikonm1	경주 (Race) (IOI11_race)	C++17	컴파일 에러	0 ms	0 KiB

race

#pragma GCC optimize("Ofast")
#include "race.h"
#include<bits//stdc++.h>
using namespace std;
const int n=2e5;
int k,ans=n+5;
vector<vector<pair<int,int>>>graph;
map<int,int>dp[n];
ll sum[n+1],ds[n+1];
void dfs(int u,int p){
    dp[u][sum[u]]=ds[u];
    int v,l;
    for(auto&i:graph[u])if(i.first!=p){
        ds[i.first]=ds[u]+1;
        sum[i.first]=sum[u]+i.second;
        dfs(v=i.first,u);
        if(dp[u].size()<dp[v].size())swap(dp[u],dp[v]);
        for(auto&j:dp[v]){
            if(dp[u].find(k-j.first)!=end(dp[u]))ans=min(ans,dp[u][k-j.first]+j.second-2ll*ds[u]);
        }
        for(auto&j:dp[v]){
            if(dp[u].find(j.first)==end(dp[u]))dp[u][j.first]=j.second;
            else dp[u][j.first]=min(dp[u][j.first],j.second);
        }
        dp[v].clear();
    }
}
int best_path(int N, int K, int H[][2], int L[])
{
    graph.resize(N);
    for(int i=0;i<N-1;++i){
        graph[H[i][0]].push_back({H[i][1],L[i]});
        graph[H[i][1]].push_back({H[i][0],L[i]});
    }
    k=K;
    dfs(0,0,0);
    return (ans==n+5?-1:ans);
}

컴파일 시 표준 에러 (stderr) 메시지

race.cpp:9:1: error: 'll' does not name a type
    9 | ll sum[n+1],ds[n+1];
      | ^~
race.cpp: In function 'void dfs(int, int)':
race.cpp:11:11: error: 'sum' was not declared in this scope
   11 |     dp[u][sum[u]]=ds[u];
      |           ^~~
race.cpp:11:19: error: 'ds' was not declared in this scope; did you mean 'dp'?
   11 |     dp[u][sum[u]]=ds[u];
      |                   ^~
      |                   dp
race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:36:8: error: too many arguments to function 'void dfs(int, int)'
   36 |     dfs(0,0,0);
      |     ~~~^~~~~~~
race.cpp:10:6: note: declared here
   10 | void dfs(int u,int p){
      |      ^~~