제출 #493334

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
493334		irmuun	Chessboard (IZhO18_chessboard)	C++17	8 / 100	69 ms	3836 KiB

chessboard

#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define PI 3.14159265359
ll n,m,t,p,h,a,b,c,d,e,f,i,j,k,mod=1000000007,mod1=998244353,MAX=1e18,X1[100001],X2[100001],Y1[100001],Y2[100001],ans;
string s,u;
ll df[101];
vector<pair<ll,ll> >v;
vector<ll>dv[101];
void dfs(ll x){
    df[x]=1;
    for(ll i=0;i<dv[x].size();i++){
        if(df[dv[x][i]]==0){
            dfs(dv[x][i]);
        }
    }
}
ll fastPow(ll a,ll b){
    ll d=1;
    while(b>0){
        if(b%2==1){
            d=d*a%mod;
        }
        b/=2;
        a=a*a%mod;
    }
    return d;
}
int main(){
	cin>>n>>k;
	for(i=1;i<=k;i++){
		cin>>X1[i]>>Y1[i]>>X2[i]>>Y2[i];
	}
	if(k==0){
		ans=n*n/2;
		for(i=1;i<n;i++){
			if(n%i==0&&n/i%2==1){
				d=n*n-(i*i);
				ans=min(ans,d/2);
			}
		}
		cout<<ans;
	}
}

컴파일 시 표준 에러 (stderr) 메시지

chessboard.cpp: In function 'void dfs(long long int)':
chessboard.cpp:15:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(ll i=0;i<dv[x].size();i++){
      |                ~^~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 8
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30