Submission #933275

#	Time	Username	Problem	Language	Result	Execution time	Memory
933275		zhaohaikun	Toxic Gene (NOI23_toxic)	C++17	0 / 100	3 ms	524 KiB

toxic

#include "toxic.h"
// MagicDark
#include <bits/stdc++.h>
#define debug cerr << "[" << __LINE__ << "] "
#define SZ(x) (int) x.size() - 1
#define all(x) x.begin(), x.end()
#define ms(x, y) memset(x, y, sizeof x)
#define F(i, x, y) for (int i = (x); i <= (y); i++)
#define DF(i, x, y) for (int i = (x); i >= (y); i--)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
template <typename T> inline void chkmax(T& x, T y) {x = max(x, y);}
template <typename T> inline void chkmin(T& x, T y) {x = min(x, y);}
template <typename T> inline void read(T &x) {
	x = 0; int f = 1; char c = getchar();
	for (; !isdigit(c); c = getchar()) if (c == '-') f = -f;
	for (; isdigit(c); c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
	x *= f;
}
mt19937 mrand(1);//chrono::steady_clock::now().time_since_epoch().count());
inline int rnd(int l, int r) {return mrand() % (r - l + 1) + l;}
int t[310];
vector <int> g;
void solve(int l, int r) {
	if (l == r) {
		g.push_back(l);
		return;
	}
	int mid = (l + r) >> 1;
	vector <int> p, q;
	F(i, l, mid) p.push_back(t[i]);
	F(i, mid + 1, r) q.push_back(t[i]);
	if (query_sample(p) != p.size()) solve(l, mid);
	if (query_sample(q) != q.size()) solve(mid + 1, r);
}
vector <int> f;
void dot(int l, int r) {
	vector <int> w;
	F(i, l, r) w.push_back(f[i - 1]);
	w.push_back(t[g[0]]);
	// for (int i: w) cout << i << " "; cout << endl;
	int f = query_sample(w);
	// debug << l << " " << r << " " << f << endl;
	if (f == 0) {
		F(i, l, r) answer_type(::f[i - 1], 'R');//, debug << i << endl;
		return;
	}
	if (f == r - l + 1) {
		F(i, l, r) answer_type(::f[i - 1], 'S');//, debug << i << endl;
		return;
	}
	int mid = (l + r) >> 1;
	dot(l, mid), dot(mid + 1, r);
}
void determine_type(int n) {
	f.clear();
	g.clear();
	F(i, 1, n) t[i] = i;
	shuffle(t + 1, t + n + 1, mrand);
	solve(1, n);
	for (int i: g) answer_type(t[i], 'T');//, debug << i << endl;
	// for (int i: g) debug << i << endl;
	// g.insert(g.begin(), 0);
	// g.push_back(n + 1);
	F(i, 1, n)
		if (!count(all(g), i)) f.push_back(t[i]);
	int B = n;
	for (int l = 1, r; l <= f.size(); l = r + 1) {
		r = min((int) f.size(), l + B - 1);
		dot(l, r);
	}
	// F(i, 0, SZ(g) - 1)
	// 	if (g[i] + 1 != g[i + 1]) dot(g[i] + 1, g[i + 1] - 1);
}

Compilation message (stderr)

toxic.cpp: In function 'void solve(int, int)':
toxic.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  if (query_sample(p) != p.size()) solve(l, mid);
      |      ~~~~~~~~~~~~~~~~^~~~~~~~~~~
toxic.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  if (query_sample(q) != q.size()) solve(mid + 1, r);
      |      ~~~~~~~~~~~~~~~~^~~~~~~~~~~
toxic.cpp: In function 'void determine_type(int)':
toxic.cpp:69:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |  for (int l = 1, r; l <= f.size(); l = r + 1) {
      |                     ~~^~~~~~~~~~~

• Subtask 1: 0 / 100