Submission #254967

#	Time	Username	Problem	Language	Result	Execution time	Memory
254967		super_j6	Cop and Robber (BOI14_coprobber)	C++14	14 / 100	63 ms	1784 KiB

coprobber

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second

const int mxn = 500;
int n, k;
int c;

pi f(int x){
	return {x / k, x % k};
}

int ff(pi p){
	return p.f * k + p.s;
}

int start(int N, bool g[mxn][mxn]){
	n = N;
	for(k = 1; k < n && g[k - 1][k]; k++);
	
	for(int i = 0; i < n; i++){
		if(count(g[i], g[i] + n, 1) > 4) return -1;
	}
	
	return c = ff({0, 0});
}

int nextMove(int r){
	pi pc = f(c), pr = f(r);
	pr.f -= pc.f, pr.s -= pc.s;
	
	if(abs(pr.f) > abs(pr.s)){
		pc.f += 2 * (pr.f > 0) - 1;
	}else if(abs(pr.s) > abs(pr.f)){
		pc.s += 2 * (pr.s > 0) - 1;
	}
	
	return c = ff(pc);
}

• Subtask 1: 0 / 16
• Subtask 2: 14 / 14
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40