Submission #108709

#	Time	Username	Problem	Language	Result	Execution time	Memory
108709		tjd229	1-Color Coloring (FXCUP2_coloring)	C++14	0 / 1	4 ms	384 KiB

coloring

#include "coloring.h"
#include <vector>
using namespace std;
bool in[101];
vector<int> v1, v2;
int paint = 0;
int find(int back, int &coin) {
	if (v1.size() == 1 && v2.empty()) return v1[0];
	else if (v2.size() == 1 && v1.empty()) return v2[0];
	if (!coin) return -1;
	for (auto x : v1) Color(x),++paint;
	int c = GetColor(back); --coin;
	vector<int> *live = &v1, *erase = &v2;
	if (c) live = &v2, erase = &v1;

	erase->clear();
	while (live->size() > erase->size()) {
		erase->push_back(live->back());
		live->pop_back();
	}
	return find(back, coin);
}
void ColoringSame(int N) {
	int i;
	int coin = 200;
	vector<int> stk, v;
	stk.push_back(1);
	while (coin > 6 && stk.size() != N) {
		int t = 1;
		v1.clear(); v2.clear();
		for (i = 2; i <= N; ++i) {
			if (in[i]) continue;
			if (t) v1.push_back(i);
			else v2.push_back(i);
			t = 1 - t;
		}
		int back = find(stk.back(), coin);
		if (back > 0) {
			in[back] = 1;
			stk.push_back(back);
		}
		else break;
		int vsz = N - stk.size();
		if (vsz*vsz + paint + stk.size() <= 7300) break;

	}
	for (Color(1), i = 2; i <= N; ++i) { if (!in[i]) v.push_back(i); }
	for (i = 0; i < v.size(); ++i) { for (auto x : v) Color(x); }
	for (; stk.size() > 1; stk.pop_back()) Color(stk.back());
}

Compilation message (stderr)

coloring.cpp: In function 'void ColoringSame(int)':
coloring.cpp:28:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while (coin > 6 && stk.size() != N) {
                     ~~~~~~~~~~~^~~~
coloring.cpp:48:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < v.size(); ++i) { for (auto x : v) Color(x); }
              ~~^~~~~~~~~~

• Subtask 1: 0 / 1