답안 #439505

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
439505 2021-06-30T06:48:51 Z 8e7 Monster Game (JOI21_monster) C++17
0 / 100
139 ms 2480 KB
#include "monster.h"
#include <iostream>
#include <algorithm>
#include <vector>
#include <utility>
#include <time.h>
#include <random>

#define maxn 1005
#define pii pair<int, int>
#define ff first
#define ss second
using namespace std;
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ";debug(b ...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
namespace {
	int cnt[maxn];
	bool res[maxn][maxn];
	bool found[maxn][maxn];
}  // namespace
bool que(int a, int b) {
	if (found[a][b]) return res[a][b];
	bool ret = Query(a, b);
	res[a][b] = ret, res[b][a] = ret ^ 1;
	return ret;
}
void mergesort(vector<int> &v) {
	if (v.size() <= 1) {
		return;
	}
	vector<int> lef, rig;
	for (int i = 0;i < v.size();i++) {
		if (i < (v.size() / 2)) lef.push_back(v[i]);
		else rig.push_back(v[i]);
	}
	mergesort(lef), mergesort(rig);	
	vector<int> ret;
	int ind = 0;
	for (int i = 0;i < lef.size();i++) {
		while (ind < rig.size() && que(lef[i], rig[ind])) {
			ret.push_back(rig[ind]);
			ind++;
		}
		ret.push_back(lef[i]);
	}
	while (ind < rig.size()) ret.push_back(rig[ind++]);
	v = ret;
}

vector<int> Solve(int N) {
	vector<int> ret;
	vector<int> cand;
	for (int i = 0;i < N;i++) cand.push_back(i);
	mergesort(cand);
	//pary(cand.begin(), cand.end());
	vector<pii> cur;
	for (int i = N - 1;i >= 0;i--) {
		int loss = 0;	
		for (auto &j:cur) {
			if (que(cand[i], cand[j.ff])) j.ss++;
			else loss++;	
		}
		for (int j = cur.size() - 1;j >= 0;j--) {
			if (cur[j].ss > 1) {
				cur.erase(cur.begin() + j);		
			}
		}
		if (loss < 2) {
			cur.push_back({i, loss});
		}
	}	
	//cout << 7122 << endl;
	//for (auto i:cur) cout << i.ff << " ";
	//cout << endl;
	int big;
	if (cur.size() == 2) {
		if (que(cand[cur[0].ff], cand[cur[1].ff])) big = cur[1].ff;
		else big = cur[0].ff;
	} else {
		big = cur[0].ff;
		for (int i = 0;i < 2;i++) {
			if (cur[i + 1].ff == cur[i].ff + 1) big = cur[i + 1].ff;
			else {
				break;
			}
		}
	}
	//debug(big);
	for (int i = big;i < N;i++) ret.push_back(cand[i]);
	int comp = N - 1;
	for (int i = big - 1;i >= 0;i--) {
		if (que(cand[i], cand[comp])) {
			for (int j = i;j < big;j++) ret.push_back(cand[j]);
			comp = big - 1, big = i;
		}
	}
	reverse(ret.begin(), ret.end());
	vector<int> a (N, 0);
	for (int i = 0;i < N;i++) a[ret[i]] = i;
	return a;
}
/*
5
3 1 4 2 0

8
7 3 4 2 1 5 6 0
*/

Compilation message

monster.cpp: In function 'void mergesort(std::vector<int>&)':
monster.cpp:36:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for (int i = 0;i < v.size();i++) {
      |                 ~~^~~~~~~~~~
monster.cpp:37:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   if (i < (v.size() / 2)) lef.push_back(v[i]);
      |       ~~^~~~~~~~~~~~~~~~
monster.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for (int i = 0;i < lef.size();i++) {
      |                 ~~^~~~~~~~~~~~
monster.cpp:44:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |   while (ind < rig.size() && que(lef[i], rig[ind])) {
      |          ~~~~^~~~~~~~~~~~
monster.cpp:50:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |  while (ind < rig.size()) ret.push_back(rig[ind++]);
      |         ~~~~^~~~~~~~~~~~
monster.cpp: At global scope:
monster.cpp:21:6: warning: '{anonymous}::cnt' defined but not used [-Wunused-variable]
   21 |  int cnt[maxn];
      |      ^~~
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Incorrect 1 ms 200 KB Wrong Answer [3]
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Incorrect 1 ms 200 KB Wrong Answer [3]
5 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Partially correct 103 ms 1276 KB Partially correct
2 Runtime error 139 ms 2480 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -