Submission #861934

#	Time	Username	Problem	Language	Result	Execution time	Memory
861934		iskhakkutbilim	Zalmoxis (BOI18_zalmoxis)	C++17	0 / 100	1068 ms	262144 KiB

zalmoxis

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

#define ff first
#define ss second
#define all(a) a.begin(), a.end()

int n, k;
vector<int> ans;
int st[31];
vector<int> First[31];
int del, idx;
void f(int x, int depth){
	if(x <= 0) return;
	int mn = 1;
	while(st[mn] <= 0 && 31 >= mn) mn++;
	if(mn > x){
		ans.push_back(x);
		st[x]--;
		del++;
	}else if(First[x].empty() or First[x].back() + del > ans.size() + 1){
		f(x-1, depth + 1);
		f(x-1, depth + 1);
		
	}else if(First[x].back() + del <= ans.size() + 1){
		ans.push_back(x);
		First[x].pop_back();
		st[x]--;
	}else assert(false);
	
}


main(){
   ios::sync_with_stdio(0);
   cin.tie(0); cout.tie(0);
	cin >> n >> k;
	for(int i = 0;i < n; i++){
		int x; cin >> x;
		st[x]++;
		First[x].push_back(i + 1);
	}
	for(int i = 1;i <= 30; i++){
		reverse(all(First[i]));
	}
	f(30, 1);
	while(ans.size() < n + k){
		vector<int> have = ans;
		vector<int> merge;
		ans.clear();
		for(int i = 0;i < have.size(); i++){
			if(have[i] > 1){
				f(have[i]-1, 1);
				f(have[i]-1, 1);
				for(int j = 0;j < i; j++) merge.push_back(have[j]);
				for(int x : ans) merge.push_back(x);
				for(int j = i + 1; j < have.size(); j++){
					merge.push_back(have[j]);
				}
				break;
			}
		}
		if(merge.empty()) assert(false);
		ans = merge;
	}
	for(auto x : ans) cout << x << ' ';
	return 0;
}

Compilation message (stderr)

zalmoxis.cpp: In function 'void f(int, int)':
zalmoxis.cpp:21:53: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  }else if(First[x].empty() or First[x].back() + del > ans.size() + 1){
      |                               ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
zalmoxis.cpp:25:33: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  }else if(First[x].back() + del <= ans.size() + 1){
      |           ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
zalmoxis.cpp: At global scope:
zalmoxis.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      | ^~~~
zalmoxis.cpp: In function 'int main()':
zalmoxis.cpp:47:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   47 |  while(ans.size() < n + k){
      |        ~~~~~~~~~~~^~~~~~~
zalmoxis.cpp:51:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   for(int i = 0;i < have.size(); i++){
      |                 ~~^~~~~~~~~~~~~
zalmoxis.cpp:57:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(int j = i + 1; j < have.size(); j++){
      |                        ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 70