Submission #819546

#	Time	Username	Problem	Language	Result	Execution time	Memory
819546		AdamGS	Minerals (JOI19_minerals)	C++17	80 / 100	32 ms	3096 KiB

minerals

#include "minerals.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=5e4+7;
int czy[2*LIM], lst=-1;
bool pytaj(int x) {
	czy[x]^=1;
	int a=Query(x+1);
	swap(a, lst);
	return a!=lst;
}
void dc(vector<int>&X, vector<int>&Y) {
	if(X.size()==1) {
		Answer(X[0]+1, Y[0]+1);
		return;
	}
	vector<int>AX, AY, BX, BY;
	int mid=X.size()/2;
	rep(i, mid) {
		pytaj(X[i]);
		AX.pb(X[i]);
	}
	for(int i=mid; i<X.size(); ++i) BX.pb(X[i]);
	for(auto i : Y) {
		if(czy[X[0]]) {
			if(pytaj(i)) BY.pb(i);
			else AY.pb(i);
		} else {
			if(pytaj(i)) AY.pb(i);
			else BY.pb(i);
		}
	}
	dc(AX, AY);
	dc(BX, BY);
}
void Solve(int n) {
	vector<int>X, Y;
	rep(i, 2*n) {
		if(pytaj(i)) X.pb(i);
		else Y.pb(i);
		if(X.size()==Y.size()) {
			dc(X, Y);
			X.clear();
			Y.clear();
		}
	}
}

Compilation message (stderr)

minerals.cpp: In function 'void dc(std::vector<int>&, std::vector<int>&)':
minerals.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i=mid; i<X.size(); ++i) BX.pb(X[i]);
      |                 ~^~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10