제출 #660710

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
660710		BidoTeima	Poklon (COCI17_poklon7)	C++17	120 / 120	740 ms	56064 KiB

poklon

/*
ID: BidoTeima
LANG: C++11
TASK: 
*/
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void moo(string filename);
void ACPLS(string str = "")
{
    if(str=="NOF")return;
    if(str.size())
        moo(str);
    else{
        #ifndef ONLINE_JUDGE
            freopen("output.txt", "w", stdout);
            freopen("input.txt", "r", stdin);
        #endif
    }
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
void moo(string fileName){
    freopen((fileName+".in").c_str(),"r",stdin);
    freopen((fileName+".out").c_str(),"w",stdout);
}
#define tc         \
    int tttttt/*,subtask*/;    \
    cin >> tttttt/* >> subtask*/; \
    while (tttttt--)/*end
*/
pair<int,int>adj[(int)1e6+5]; 
pair<int,int>ans={0,0};
string binary(int x){ 
    string ret;
    if(x<0)x=-x;
    if(!x)return "0";
    while(x){
        ret.push_back('0'+(x%2));
        x/=2;
    }
    reverse(ret.begin(),ret.end());
    return ret;
} 
void dfs(ll node, int d){
    if(node <= 0){
        if(node == 0)return; 
        if(log2(max(1ll,-node))+d>=log2(max(1,ans.first))+ans.second){
            ans={-node,d};
        }
        return;
    }
    dfs(adj[node].first,d+1);
    dfs(adj[node].second,d+1);
}
int main()
{
    //ACPLS();   
    int n;
    cin>>n;
    for(int i = 1; i <= n; i++){
        ll u,v;
        cin>>u>>v;
        adj[i].first=(u);
        adj[i].second=(v);
    }
    dfs(1,0);
    cout<<binary(ans.first);
    for(int i = 0; i < ans.second; i++)cout<<0;
}

컴파일 시 표준 에러 (stderr) 메시지

poklon.cpp: In function 'void ACPLS(std::string)':
poklon.cpp:17:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |             freopen("output.txt", "w", stdout);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
poklon.cpp:18:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |             freopen("input.txt", "r", stdin);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
poklon.cpp: In function 'void moo(std::string)':
poklon.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen((fileName+".in").c_str(),"r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
poklon.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     freopen((fileName+".out").c_str(),"w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 120 / 120