제출 #339390

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
339390		Kerim	생물 실험 (IZhO13_expgorl)	C++17	100 / 100	4 ms	492 KiB

expgorl

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;
 
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
double lx,ly,gx,gy,tx,ty;
int n,k;
char s[MAXN];
double dis(double x,double y){
	return sqrt((x-lx)*(x-lx)+(y-ly)*(y-ly));	
}
double f1(int a){
	double x=gx+a*tx;
	double y=gy+a*ty;
	double res=dis(x,y);
    for(int i=0;i<n;i++){
    	if(s[i]=='L')
			x--;
		else if(s[i]=='R')
			x++;
		else if(s[i]=='F')
			y++;
		else if(s[i]=='B')
			y--;
		umin(res,dis(x,y));
    }return res;
}
double mn(){
	int st=0,en=k-1;
	while(st+1<en){
		int mid=(st+en)>>1;
		if(f1(mid)<f1(mid+1))
			en=mid;
		else
			st=mid;
	}
	return min(f1(st),f1(en));	
}
double f2(int a){
	double x=gx+a*tx;
	double y=gy+a*ty;
	double res=dis(x,y);
    for(int i=0;i<n;i++){
    	if(s[i]=='L')
			x--;
		else if(s[i]=='R')
			x++;
		else if(s[i]=='F')
			y++;
		else if(s[i]=='B')
			y--;
		umax(res,dis(x,y));
    }return res;
}
double mx(){
	return max(f2(0),f2(k-1));	
}
int main(){
    //freopen("file.in", "r", stdin);
    scanf("%d",&k);
    scanf("%s",s);n=strlen(s);
    cin>>lx>>ly>>gx>>gy;
    for(int i=0;i<n;i++){
    	if(s[i]=='L')
			tx--;
		else if(s[i]=='R')
			tx++;
		else if(s[i]=='F')
			ty++;
		else if(s[i]=='B')
			ty--;
    }
    printf("%.12lf %.12lf\n",mn(),mx());
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

expgorl.cpp: In function 'int main()':
expgorl.cpp:74:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   74 |     scanf("%d",&k);
      |     ~~~~~^~~~~~~~~
expgorl.cpp:75:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   75 |     scanf("%s",s);n=strlen(s);
      |     ~~~~~^~~~~~~~

• Subtask 1: 100 / 100