Submission #711021

#	Time	Username	Problem	Language	Result	Execution time	Memory
711021		minhcool	Flights (JOI22_flights)	C++17	0 / 100	13 ms	8940 KiB

Ali

#include "Ali.h"
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;

const int N = 3e5 + 5;
const int mod = 1e9 + 7, oo = 1e18 + 7;

vector<int> Adj[N];

int d[N], anc[N][20];

void dfs(int u, int p){
	for(auto v : Adj[u]){
		if(v == p) continue;
		d[v] = d[u] + 1;
		anc[v][0] = u;
		for(int i = 1; i <= 19; i++) anc[u][i] = anc[anc[u][i - 1]][i - 1];
		dfs(v, u);
	}
}

int lca(int x, int y){
	if(d[x] > d[y]) swap(x, y);
	for(int i = 19; i >= 0; i--){
		if(d[y] >= (d[x] + (1LL << i))) y = anc[y][i];	
	}
	if(x == y) return x;
	for(int i = 19; i >= 0; i--){
		if(anc[x][i] != anc[y][i]){
			x = anc[x][i], y = anc[y][i];
		}
	}
	return anc[x][0];
}

int n;

int dist(int x, int y){
	if(x > n || y > n) return 0;
	return d[x] + d[y] - 2 * d[lca(x, y)];
}

void Init(int N, vector<int> U, vector<int> V) {
	/*
  variable_example++;
  SetID(0, 0);
  SetID(1, 1);
  SetID(2, 2 * N + 19);*/
    n = N;
    for(int i = 0; i < n; i++) Adj[i].clear();
	for(int i = 0; i < (n - 1); i++){
		Adj[U[i]].pb(V[i]);
		Adj[V[i]].pb(U[i]);
	}	
	dfs(0, 0);
	for(int i = 0; i < n; i++) SetID(i, i);
}

string SendA(string S) {
  	int temp0 = 0, temp1 = 0;
  	for(int i = 0; i < 10; i++) if(S[i] == '1') temp0 |= (1LL << i);
  	for(int i = 0; i < 10; i++) if(S[i + 10] == '1') temp1 |= (1LL << i);
  	temp0 *= 10, temp1 *= 10;
  	string ans = "";
  	for(int i = 0; i < 10; i++){
  		for(int j = 0; j < 10; j++){
  			int temp = dist(temp0 + i, temp1 + j);
  			//cout << temp0 + i << " " << temp1 + j << " " << temp << "\n";
  			for(int k = 0; k < 14; k++){
  				if(temp & (1LL << k)) ans += "1";
  				else ans += "0";
			}			
		}	
	}
	return ans;
}

Benjamin

#include "Benjamin.h"
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;

const int N = 3e5 + 5;
const int mod = 1e9 + 7, oo = 1e18 + 7;

int x, y;

string SendB(int N, int X, int Y) {
	x = X, y = Y;
	int temp0 = X / 10, temp1 = Y / 10;
	string s;
	for(int i = 0; i < 10; i++){
		if(!(temp0 & (1LL << i))) s += "0";
		else s += "1";
	}
	for(int i = 0; i < 10; i++){
		if(!(temp1 & (1LL << i))) s += "0";
		else s += "1";
	}
	return s;
}

int Answer(string T) {
	int tol = ((x % 10) * 10) + (y % 10), ans = 0;
	for(int i = tol * 14; i < (tol + 1) * 14; i++){
		if(T[i] == '1') ans += (1LL << (i - tol * 14));
	}
	return ans;
}

Compilation message (stderr)

Ali.cpp:14:36: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   14 | const int mod = 1e9 + 7, oo = 1e18 + 7;
      |                               ~~~~~^~~
grader_ali.cpp:10:8: warning: '{anonymous}::_randmem' defined but not used [-Wunused-variable]
   10 |   char _randmem[12379];
      |        ^~~~~~~~

Benjamin.cpp:14:36: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   14 | const int mod = 1e9 + 7, oo = 1e18 + 7;
      |                               ~~~~~^~~

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