제출 #1336978

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1336978		michael12	Easter Eggs (info1cup17_eastereggs)	C++20	컴파일 에러	0 ms	0 KiB

eastereggs

#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include "grader.h"
#include<bits/stdc++.h>
#define endl '\n'
#define ff first
#define ss second
using namespace std;
constexpr int oo = 1e18;
const int maxn = 5e5 + 5;
vector<int> s;
vector<int> adj[maxn];
vector<int> all;
void dfs(int u, int p){
    all.push_back(u);
    for(auto v : adj[u]){
        if(v == p) continue;
        dfs(v, u);
    }
}
int findEgg(int N, vector<pair<int, int>> bridges){
    for(int i = 0; i < bridges.size(); i++){
        adj[bridges[i].ff].push_back(bridges[i].ss);
        adj[bridges[i].ss].push_back(bridges[i].ff);
    }
    dfs(1, - 1);
    vector<int> st;
    for(int i = 0; i < all.size(); i++){
        st.push_back(all[i]);
        if(query(st)){
            return all[i];
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

eastereggs.cpp:9:20: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    9 | constexpr int oo = 1e18;
      |                    ^~~~
eastereggs.cpp:9:20: error: overflow in constant expression [-fpermissive]
eastereggs.cpp:9:20: error: overflow in constant expression [-fpermissive]
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:34:1: warning: control reaches end of non-void function [-Wreturn-type]
   34 | }
      | ^