Submission #587687

#	Time	Username	Problem	Language	Result	Execution time	Memory
587687		LastRonin	Flights (JOI22_flights)	C++17	0 / 100	9 ms	1628 KiB

Ali

#include "Ali.h"
#include <string>
#include <vector>
#include <queue>
 
using namespace std;
  
vector<vector<int>> g;
int n;
 
void Init(int N, vector<int> U, vector<int> V) {
	n = N;
	g.clear();
	for(int j = 0; j < n; j++) {
	    vector<int> a;
		g.push_back(a);
	}
	for(int j = 0; j < U.size(); j++) {
		int a = U[j], b = V[j];
		g[a].push_back(b);
		g[b].push_back(a);
	}
	for(int i = 0; i < n; i++)
		SetID(i, i);
}
 
string SendA(string S) {
	int v = 0;
	for(int j = 0; j < S.size(); j++) {
		if(S[j] == '1')
			v += (1<<j);		
	}
	
	int dist[n] = {0};
	for(int i = 0; i < n; i++)
		dist[i] = -1;
	
	queue<int> q;
	
	dist[v] = 0;
	q.push(v);
	while(q.size()) {
		int a = q.front();
		q.pop();
		for(auto u : g[a]) {
			if(dist[u] == -1) {
				dist[u] = dist[a] + 1;
				q.push(u);
			}
		}
	}
	string a;
	for(int j = 0; j < n; j++) {
		for(int i = 0; i < 20; i++) {
			if((dist[j]>>i)&1)a += "1";
			else a += "0";
		}
	}
	return a;
}

Benjamin

#include "Benjamin.h"
#include <string>
#include <vector>
 
using namespace std;

namespace { 
	int n, x, y;
} 
string SendB(int N, int X, int Y) {
	x = X;
	y = Y;
	n = N;
	string a;
	for(int j = 0; j < 20; j++) {
		if((1<<j)&x)a += "1";
		else a += "0";
	}
	return a;
}
 
int Answer(string T) {
	int pos = 0;
	int answ = 0;			
	for(int j = 0, px = 0; j < n; j++, px += 20) {
	    int dist = 0,tek = 1;
		for(int i = 0; i < 20; i++) {
			if(px + i < T.size() && T[px + i] == '1')dist += tek;
			tek *= 2;			
		}
		if(j == y) {
			answ = dist;
			break;
		}
	}

	return answ;
}

Compilation message (stderr)

Ali.cpp: In function 'void Init(int, std::vector<int>, std::vector<int>)':
Ali.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for(int j = 0; j < U.size(); j++) {
      |                 ~~^~~~~~~~~~
Ali.cpp: In function 'std::string SendA(std::string)':
Ali.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int j = 0; j < S.size(); j++) {
      |                 ~~^~~~~~~~~~
grader_ali.cpp:10:8: warning: '{anonymous}::_randmem' defined but not used [-Wunused-variable]
   10 |   char _randmem[12379];
      |        ^~~~~~~~

Benjamin.cpp: In function 'int Answer(std::string)':
Benjamin.cpp:28:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |    if(px + i < T.size() && T[px + i] == '1')dist += tek;
      |       ~~~~~~~^~~~~~~~~~
Benjamin.cpp:23:6: warning: unused variable 'pos' [-Wunused-variable]
   23 |  int pos = 0;
      |      ^~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 85