제출 #894647

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
894647		heeheeheehaaw	생물 실험 (IZhO13_expgorl)	C++17	100 / 100	2 ms	1012 KiB

expgorl

#include <bits/stdc++.h>
#define int long long

using namespace std;

typedef long double ld;

struct point
{
    int x, y;
};

int dist(int x1, int y1, int x2, int y2)
{
    return ((x1 - x2) * (x1 - x2)) + ((y1 - y2) * (y1 - y2));
}

signed main()
{
    int k;
    cin>>k;
    string s;
    cin>>s;

    int xl, yl, xs, ys;
    cin>>xl>>yl>>xs>>ys;
    vector<point> v;
    v.push_back({xs, ys});
    int x = xs, y = ys;
    for(int i = 0; i < s.size(); i++)
    {
        if(s[i] == 'L')
            x--;
        if(s[i] == 'R')
            x++;
        if(s[i] == 'F')
            y++;
        if(s[i] == 'B')
            y--;
        v.push_back({x, y});
    }

    int dx = x - xs;
    int dy = y - ys;
    int rmax = 0, rmin = 2e18;
    for(auto it : v)
    {
        rmax = max(rmax, dist(it.x, it.y, xl, yl));
        rmax = max(rmax, dist(it.x + (k - 1) * dx, it.y + (k - 1) * dy, xl, yl));
        int st = 2, dr = k, rez = 1;
        while(st <= dr)
        {
            int mij = (st + dr) / 2;
            int d1 = dist(it.x + (mij - 1) * dx, it.y + (mij - 1) * dy, xl, yl);
            int d2 = dist(it.x + (mij - 2) * dx, it.y + (mij - 2) * dy, xl, yl);
            if(d1 - d2 <= 0) rez = mij, st = mij + 1;
            else dr = mij - 1;
        }

        rmin = min(rmin, dist(it.x + (rez - 1) * dx, it.y + (rez - 1) * dy, xl, yl));
    }

    cout<<fixed<<setprecision(12);
    cout<<(ld)sqrt(rmin)<<" "<<(ld)sqrt(rmax);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

expgorl.cpp: In function 'int main()':
expgorl.cpp:30:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for(int i = 0; i < s.size(); i++)
      |                    ~~^~~~~~~~~~

• Subtask 1: 100 / 100