Submission #1310676

#	Time	Username	Problem	Language	Result	Execution time	Memory
1310676		matere	Data Transfer (IOI19_transfer)	C++20	100 / 100	52 ms	1728 KiB

transfer

#include "transfer.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> get_attachment(vector<int> source) {
	int N=source.size();
	int num=0;
	for(int i=0;i<N;i++){
		if(source[i]==1) num^=(i+1);
	}
	vector<int>v;
	if(N==63){
		int fn=0;
		for(int i=0;i<6;i++){
			if((1<<i)&num){
				v.push_back(1);
				fn^=1;
			}
			else{
				v.push_back(0);
			}
		}
		v.push_back(fn);
		return v;
	}
	else if(N==255){
		int fn=0;
		for(int i=0;i<8;i++){
			if((1<<i)&num){
				v.push_back(1);
				fn^=1;
			}
			else{
				v.push_back(0);
			}
		}
		v.push_back(fn);
		return v;
	}
	assert(0);
}

vector<int> retrieve(vector<int> data) {
	int N=data.size();
	if(N==63+7){
		vector<int>source = vector<int>(data.begin(), data.end()-7);
		vector<int>xtra = vector<int>(data.end()-7, data.end()-1);
		int fn=data.back();
		int num=0,num2=0;
		for(int i=0;i<N-7;i++){
			if(source[i]==1) num^=(i+1);
		}
		vector<int>v;
		int fn2=0;
		for(int i=0;i<6;i++){
			if(xtra[i]==1){
				num2+=(1<<i);
				fn2^=1;
			}
		}
		// cout<<num<<' '<<num2<<' '<<fn<<' '<<fn2<<' '<<(num2^num)<<endl;
		if(fn!=fn2) return source;
		if(num==num2) return source;
		source[(num2^num)-1]^=1;
		return source;
	}
	else if(N==255+9){
		vector<int>source = vector<int>(data.begin(), data.end()-9);
		vector<int>xtra = vector<int>(data.end()-9, data.end()-1);
		int fn=data.back();
		int num=0,num2=0;
		for(int i=0;i<N-9;i++){
			if(source[i]==1) num^=(i+1);
		}
		vector<int>v;
		int fn2=0;
		for(int i=0;i<8;i++){
			if(xtra[i]==1){
				num2+=(1<<i);
				fn2^=1;
			}
		}
		if(fn!=fn2) return source;
		if(num==num2) return source;
		source[(num2^num)-1]^=1;
		return source;
	}
	assert(0);
}

Compilation message (stderr)

grader.cpp: In instantiation of 'void shuffle(std::vector<T>&) [with T = Scenario]':
grader.cpp:200:10:   required from here
grader.cpp:28:23: warning: 'void std::random_shuffle(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<Scenario*, vector<Scenario> >]' is deprecated: use 'std::shuffle' instead [-Wdeprecated-declarations]
   28 |         random_shuffle(v.begin(), v.end());
      |         ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61,
                 from grader.cpp:8:
/usr/include/c++/13/bits/stl_algo.h:4581:5: note: declared here
 4581 |     random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~~~~~~~~~~~

• Subtask 1: 60 / 60
• Subtask 2: 40 / 40