Submission #551888

#	Time	Username	Problem	Language	Result	Execution time	Memory
551888		Antekb	Super Dango Maker (JOI22_dango3)	C++17	100 / 100	446 ms	712 KiB

dango3

#include "dango3.h"
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
namespace{

}
void Solve(int N, int M) {
	vector<int> V(N*M);
	for(int i=0; i<N*M; i++){
		V[i]=i+1;
	}
	for(int j=0; j<M; j++){
		shuffle(V.begin(), V.end(), rng);
		vector<int> V2;
		int l=1, r=V.size();
		while(l<r){
			int m=(l+r)>>1;
			V2=V;
			V2.resize(m);
			if(Query(V2))r=m;
			else l=m+1;
		}
		V2.clear();
		vector<int> V3;
		while(V.size()>l){
			V3.push_back(V.back());
			V.pop_back();
		}
		while(V.size()){
			int x=V.back();
			V.pop_back();
			//cerr<<V.size()<<"a\n";
			for(int i:V2)V.push_back(i);
			//cerr<<V.size()<<"a\n";
			int b=Query(V);
			//cerr<<V.size()<<"a\n";
			for(int i:V2)V.pop_back();
			//cerr<<V.size()<<"a\n";
			if(!b)V2.push_back(x);
			else V3.push_back(x);
		}
		assert(V2.size()==N);
		Answer(V2);
		V=V3;
	}
}

Compilation message (stderr)

dango3.cpp: In function 'void Solve(int, int)':
dango3.cpp:26:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   26 |   while(V.size()>l){
      |         ~~~~~~~~^~
dango3.cpp:38:12: warning: unused variable 'i' [-Wunused-variable]
   38 |    for(int i:V2)V.pop_back();
      |            ^
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from dango3.cpp:2:
dango3.cpp:43:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |   assert(V2.size()==N);
      |          ~~~~~~~~~^~~

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 15 / 15
• Subtask 4: 78 / 78