Submission #130804

#	Time	Username	Problem	Language	Result	Execution time	Memory
130804		gs14004	Snake (CEOI08_snake)	C++17	80 / 100	2 ms	420 KiB

snake

#include <bits/stdc++.h>
#include "snakelib.h"
using namespace std;

char a1, a2;

int main(){
	int sl = 0, el = 12121;
	int sr = 0, er = 12121;
	int k = get_speed();
	for(int i=0; (er - sr > k || el - sl > k) && i < 13; i++){
		el += k;
		er += k;
		int ml = (sl + el) / 2;
		int mr = (sr + er) / 2;
		ask_snake(ml, mr, &a1, &a2);
		if(a1 == 'b') sl = ml + 1;
		else el = ml;
		if(a2 == 'f') er = mr;
		else sr = mr + 1;
	}
	int est1 = (er - el);
	int est2 = (sr - sl);
	tell_length(max(1, (est1 + est2) / 2));
}

• Subtask 1: 80 / 100