oj.uz

Submission #739289

# Submission time Handle Problem Language Result Execution time Memory
739289 2023-05-10T09:55:05 Z onebit1024 Data Transfer (IOI19_transfer) C++17
48 / 100
 7 ms 2488 KB 
#include "transfer.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back



void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");} 

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define dbg(x...) cerr << "LINE(" << __LINE__ << ") -> " <<"[" << #x << "] = ["; _print(x)
#else
#define dbg(x...)
#endif

string bin(int x){
	string res;
	for(int i = 30;i>=0;--i){
		if(x&(1ll<<i))res+='1';
		else res+='0';
	}
	while(!res.empty() && res[0]=='0')res.erase(res.begin());
	return res;
}
int power(int x){
	// is x a power of 2
	while((x%2)==0)x/=2;
	if(x==1)return 1;
	return 0;
}


std::vector<int> get_attachment(std::vector<int> source) {
	int v = 3;
	int x = 0;
	for(int i = 0;i<source.size();++i){
		while(power(v))v++;
		if(source[i])x+=v;
		v++;
	}
	string s= bin(x);
	vector<int>ret;
	for(auto w : s)ret.pb(w-'0');
	return ret;
}
/*
1
2 110101100
*/
std::vector<int> retrieve(std::vector<int> data) {
	int N = 63;
	int bits = data.size()-N;
	vector<int>ret;
	if(bits==0){
		for(int i = 0;i<data.size();++i)ret.pb(0);
		return ret;
	}
	int v = 3, X = 0, Y = 0;
	for(int i = 0;i<N;++i){
		while(power(v))v++;
		if(data[i])X+=v;
		v++;
	}
	int pos = 0;
	for(int i = data.size()-1;i>=N;--i){
		if(data[i])Y+=(1ll<<pos);
		pos++;
	}
	if(X==Y){
		for(int i = 0;i<N;++i)ret.pb(data[i]);
		return ret;
	}
	v = 3;
	for(int i = 0;i<N;++i){
		while(power(v))v++;

		int nsum = X;
		if(data[i])nsum-=v;
		else nsum+=v;
		if(nsum==Y){
			for(int j = 0;j<i;++j)ret.pb(data[j]);
			ret.pb((data[i]?0:1));
			for(int j = i+1;j<N;++j)ret.pb(data[j]);
			return ret;
		}
		v++;
	}
	for(int i = 0;i<N;++i)ret.pb(data[i]);
	return ret;
}

Compilation message

transfer.cpp: In function 'std::vector<int> get_attachment(std::vector<int>)':
transfer.cpp:54:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |  for(int i = 0;i<source.size();++i){
      |                ~^~~~~~~~~~~~~~
transfer.cpp: In function 'std::vector<int> retrieve(std::vector<int>)':
transfer.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |   for(int i = 0;i<data.size();++i)ret.pb(0);
      |                 ~^~~~~~~~~~~~

Subtask #1
48.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 644 KB Output is correct
2 Partially correct 5 ms 644 KB Partially correct
3 Partially correct 5 ms 648 KB Partially correct
4 Partially correct 5 ms 652 KB Partially correct
5 Partially correct 6 ms 652 KB Partially correct
6 Partially correct 6 ms 652 KB Partially correct
7 Partially correct 5 ms 652 KB Partially correct
8 Partially correct 5 ms 644 KB Partially correct
9 Partially correct 6 ms 740 KB Partially correct
10 Partially correct 5 ms 644 KB Partially correct
11 Partially correct 5 ms 652 KB Partially correct
12 Partially correct 5 ms 736 KB Partially correct
13 Partially correct 6 ms 644 KB Partially correct
14 Partially correct 5 ms 644 KB Partially correct
15 Partially correct 5 ms 656 KB Partially correct
16 Partially correct 6 ms 816 KB Partially correct
17 Partially correct 5 ms 784 KB Partially correct

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 2488 KB WA in grader: wrong source retrieval
2 Halted 0 ms 0 KB -