Submission #303947

#	Time	Username	Problem	Language	Result	Execution time	Memory
303947		ignaciocanta	Connecting Supertrees (IOI20_supertrees)	C++14	11 / 100	239 ms	22136 KiB

supertrees

#include <bits/stdc++.h>
 
using namespace std;
 
using tint = long long;
using ld = long double;
 
#define forsn(i, s, n) for(int i = s; i < int(n); i++)
#define forn(i, n) forsn(i, 0, n)
 
using vi = vector<int>;
#define pb push_back
#define rsz resize
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
 
using pi = pair<int,int>;
#define f first
#define s second
#define mp make_pair
 
#define DBG(x) cerr << #x << " = " << x << endl;
 
const int MOD = 1e9+7;
const int MX = 1000005;
const int INF = 1e9;
const ld PI = acos(ld(-1)); 
 
void NACHO(string name = "rental"){
    ios_base::sync_with_stdio(0); cin.tie(0);
    freopen((name+".in").c_str(), "r", stdin);
    freopen((name+".out").c_str(), "w", stdout);
}

#include "supertrees.h"


int construct(std::vector<std::vector<int>> p) {
	//Primero, si hay un 3, es imposible
	//(Al menos no encontre un caso que rompiera, ya que siempre implica que hay un camino mas largo)
	int n = sz(p);
	bool ok = 1;
	forn(i, n){
		forn(j, n){
			if(p[i][j] == 3) ok = 0;
		}
	}
	if(!ok){
		return 0;
	}
	vector<vi> g (n, vi (n, 0));
	forn(i, n-1){
		g[i][i+1] = g[i+1][i] = 1;
	}
	build(g);
	return 1;
}

Compilation message (stderr)

supertrees.cpp: In function 'void NACHO(std::string)':
supertrees.cpp:31:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   31 |     freopen((name+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   32 |     freopen((name+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 10
• Subtask 3: 0 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4