Submission #838052

#	Time	Username	Problem	Language	Result	Execution time	Memory
838052		penguinman	Vision Program (IOI19_vision)	C++17	100 / 100	11 ms	1884 KiB

vision

#include "vision.h"
#include <bits/stdc++.h>

#ifndef EVAL
#include "grader.cpp"
#endif

using std::cin;
using std::cout;
using std::vector;
using std::string;
using ll = int;
using vi = vector<ll>;
using vii = vector<vi>;
using pii = std::pair<ll,ll>;

#define rep(i,j,k) for(ll i=ll(j); i<ll(k); i++)
#define REP(i,j,k) for(ll i=ll(j); i<=ll(k); i++)
#define per(i,j,k) for(ll i=ll(j); i>=ll(k); i--)
#define ln "\n"
#define pb emplace_back
#define mp std::make_pair
#define mtp std::make_tuple
#define all(a) a.begin(),a.end()


void construct_network(int H, int W, int K) {

	vii plus(H+W-1), minus(H+W-1);
	rep(i,0,H){
		rep(j,0,W){
			ll idx = i*W+j;
			plus[i+j].pb(idx);
			minus[i-j+W-1].pb(idx);
		}
	}
	vi plus_or(H+W-1), minus_or(H+W-1);
	rep(i,0,H+W-1){
		plus_or[i] = add_or(plus[i]);
		minus_or[i] = add_or(minus[i]);
	}
	vi plus_val, minus_val;
	rep(i,0,H+W-1){
		if(i+K >= plus_or.size()) continue;
		plus_val.pb(add_and({plus_or[i], plus_or[i+K]}));
		minus_val.pb(add_and({minus_or[i], minus_or[i+K]}));
	}
	ll plus_check1 = add_or(plus_val);
	ll minus_check1 = add_or(minus_val);
	{
		ll modify = add_xor(plus_or);
		modify = add_not(modify);
		rep(i,0,H+W-1) plus_or[i] = add_and({plus_or[i], modify});
	}
	{
		ll modify = add_xor(minus_or);
		modify = add_not(modify);
		rep(i,0,H+W-1) minus_or[i] = add_and({minus_or[i], modify});
	}
	rep(i,1,H+W-1){
		plus_or[i] = add_xor({plus_or[i-1], plus_or[i]});
		minus_or[i] = add_xor({minus_or[i-1], minus_or[i]});
	}
	plus_val.clear();
	minus_val.clear();
	rep(i,0,H+W-1){
		if(i+K >= plus_or.size()) continue;
		plus_val.pb(add_and({plus_or[i], plus_or[i+K]}));
		minus_val.pb(add_and({minus_or[i], minus_or[i+K]}));
	}
	ll plus_check2 = add_or(plus_val);
	ll minus_check2 = add_or(minus_val);
	plus_check2 = add_not(plus_check2);
	minus_check2 = add_not(minus_check2);
	ll final_check1 = add_and({plus_check1, minus_check2});
	ll final_check2 = add_and({plus_check2, minus_check1});
	ll ans = add_or({final_check1, final_check2});
	return;
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:44:10: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |   if(i+K >= plus_or.size()) continue;
      |      ~~~~^~~~~~~~~~~~~~~~~
vision.cpp:67:10: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |   if(i+K >= plus_or.size()) continue;
      |      ~~~~^~~~~~~~~~~~~~~~~
vision.cpp:77:5: warning: unused variable 'ans' [-Wunused-variable]
   77 |  ll ans = add_or({final_check1, final_check2});
      |     ^~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 15 / 15
• Subtask 5: 12 / 12
• Subtask 6: 8 / 8
• Subtask 7: 14 / 14
• Subtask 8: 19 / 19