Submission #136458

#	Time	Username	Problem	Language	Result	Execution time	Memory
136458		onjo0127	Meandian (CEOI06_meandian)	C++11	100 / 100	9 ms	376 KiB

meandian

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

int N, A[111];

void solve(vector<int> &S) {
	if((int)S.size() == 4) {
		for(auto& it: S) A[it-1] = -1;
		return;
	}
	int a0 = Meandian(S[1], S[2], S[3], S[4]);
	int a1 = Meandian(S[0], S[2], S[3], S[4]);
	int a2 = Meandian(S[0], S[1], S[3], S[4]);
	int a3 = Meandian(S[0], S[1], S[2], S[4]);
	int a4 = Meandian(S[0], S[1], S[2], S[3]);
	int v1 = a0 ^ a1 ^ a2 ^ a3 ^ a4;
	int v2 = a0 + a1 + a2 + a3 + a4 - v1;
	int ans = (2*v1 + v2) / 2 - 2*v1;
	if(a0 == v1) {A[S[0]-1] = ans; S.erase(S.begin() + 0);}
	if(a1 == v1) {A[S[1]-1] = ans; S.erase(S.begin() + 1);}
	if(a2 == v1) {A[S[2]-1] = ans; S.erase(S.begin() + 2);}
	if(a3 == v1) {A[S[3]-1] = ans; S.erase(S.begin() + 3);}
	if(a4 == v1) {A[S[4]-1] = ans; S.erase(S.begin() + 4);}
	solve(S);
}

int main() {
	N = Init();
	vector<int> S;
	for(int i=1; i<=N; i++) S.push_back(i);
	solve(S);
	Solution(A);
	return 0;
} 

• Subtask 1: 100 / 100