Submission #248859

#	Time	Username	Problem	Language	Result	Execution time	Memory
248859		vanic	Pick (COI18_pick)	C++14	10 / 100	1 ms	512 KiB

pick

#include <iostream>
#include <math.h>
#include <algorithm>
#include <vector>
#include <assert.h>

using namespace std;

int a, b, c, d;
vector < pair < int, int > > sol;
int xs, ys;

void push(){
	sol.push_back({xs, ys});
}

void slucaj5(){
	for(int i=0; i<c/2; i++){
		push();
		xs++;
		ys++;
	}
	push();
	xs--;
	ys++;
	for(int i=0; i<c/2-1; i++){
		push();
		xs--;
		ys--;
	}
	for(int i=0; i<d/2-1; i++){
		push();
		xs--;
		ys++;
	}
	push();
	xs--;
	ys--;
	for(int i=0; i<d/2; i++){
		push();
		xs++;
		ys--;
	}
	assert(xs==0 && ys==0);
}


void slucaj1(){
	if(a && b){
		for(int i=0; i<a/2; i++){
			push();
			xs++;
		}
		for(int i=0; i<c/2; i++){
			push();
			xs++;
			ys++;
		}
		push();
		ys++;
		for(int i=0; i<c/2; i++){
			push();
			xs--;
			ys--;
		}
		for(int i=0; i<a/2-1; i++){
			push();
			xs--;
		}
		for(int i=0; i<b/2-1; i++){
			push();
			ys++;
		}
		for(int i=0; i<d/2; i++){
			push();
			xs--;
			ys++;
		}
		push();
		xs--;
		for(int i=0; i<d/2; i++){
			push();
			xs++;
			ys--;
		}
		for(int i=0; i<b/2; i++){
			push();
			ys--;
		}
	}
	else if(!a){
		for(int i=0; i<b/2; i++){
			push();
			ys++;
		}
		if(c){
			for(int i=0; i<c/2; i++){
				push();
				xs++;
				ys++;
			}
			for(int i=0; i<d/2; i++){
				push();
				xs++;
				ys--;
			}
			push();
			ys--;
			for(int i=0; i<d/2; i++){
				push();
				xs--;
				ys++;
			}
			for(int i=0; i<c/2-1; i++){
				push();
				xs--;
				ys--;
			}
			for(int i=0; i<b/2-1; i++){
				push();
				ys--;
			}
			push();
			xs--;
			ys--;
		}
		else{
			for(int i=0; i<d/2; i++){
				push();
				xs++;
				ys--;
			}
			push();
			ys--;
			for(int i=0; i<d/2-1; i++){
				push();
				xs--;
				ys++;
			}
			for(int i=0; i<b/2-1; i++){
				push();
				ys--;
			}
			push();
			xs--;
			ys++;
			
		}
	}
	else{
		for(int i=0; i<a/2; i++){
			push();
			xs++;
		}
		if(c){
			for(int i=0; i<c/2; i++){
				push();
				xs++;
				ys++;
			}
			for(int i=0; i<d/2; i++){
				push();
				xs--;
				ys++;
			}
			push();
			xs--;
			for(int i=0; i<d/2; i++){
				push();
				xs++;
				ys--;
			}
			for(int i=0; i<c/2-1; i++){
				push();
				xs--;
				ys--;
			}
			for(int i=0; i<a/2-1; i++){
				push();
				xs--;
			}
			push();
			xs--;
			ys--;
		}
		else{
			for(int i=0; i<d/2; i++){
				push();
				xs--;
				ys++;
			}
			push();
			xs--;
			for(int i=0; i<d/2-1; i++){
				push();
				xs++;
				ys--;
			}
			for(int i=0; i<a/2-1; i++){
				push();
				xs--;
			}
			push();
			xs++;
			ys--;
			
		}

	}
	assert(xs==0 && ys==0);
}

void slucaj2(){
	push();
	if(a){
		xs++;
		ys++;
		for(int i=0; i<a/2-1; i++){
			push();
			xs++;
		}
		push();
		xs++;
		ys--;
		for(int i=0; i<a/2-1; i++){
			push();
			xs--;
		}
		for(int i=0; i<b/2; i++){
			push();
			ys--;
		}
		for(int i=0; i<d/2; i++){
			push();
			xs++;
			ys--;
		}
		push();
		xs--;
		for(int i=0; i<d/2; i++){
			push();
			xs--;
			ys++;
		}
		for(int i=0; i<b/2; i++){
			push();
			ys++;
		}
		for(int i=0; i<c/2; i++){
			push();
			xs--;
			ys--;
		}
		push();
		xs--;
		for(int i=0; i<c/2; i++){
			push();
			xs++;
			ys++;
		}
	}
	else{
		xs--;
		ys++;
		for(int i=0; i<b/2-1; i++){
			push();
			ys++;
		}
		push();
		xs++;
		ys++;
		for(int i=0; i<b/2-1; i++){
			push();
			ys--;
		}
		for(int i=0; i<c/2; i++){
			push();
			xs++;
			ys++;
		}
		push();
		ys--;
		for(int i=0; i<d/2; i++){
			push();
			xs--;
			ys--;
		}
		for(int i=0; i<c/2; i++){
			push();
			xs++;
			ys--;
		}
		push();
		ys--;
		for(int i=0; i<c/2; i++){
			push();
			xs--;
			ys++;
		}
	}
	assert(xs==0 && ys==0);
}

void slucaj3(){
	for(int i=0; i<a/2; i++){
		push();
		xs--;
	}
	for(int i=0; i<d/2; i++){
		push();
		xs--;
		ys++;
	}
	push();
	ys++;
	for(int i=0; i<d/2; i++){
		push();
		xs++;
		ys--;
	}
	for(int i=0; i<a/2; i++){
		push();
		xs++;
	}
	push();
	xs++;
	ys--;
	for(int i=0; i<b/2; i++){
		push();
		ys--;
	}
	for(int i=0; i<c/2; i++){
		push();
		xs--;
		ys--;
	}
	push();
	xs--;
	for(int i=0; i<c/2; i++){
		push();
		xs++;
		ys++;
	}
	for(int i=0; i<b/2; i++){
		push();
		ys++;
	}
	assert(xs==0 && ys==0);
}

void slucaj4(){
	for(int i=0; i<a/2; i++){
		push();
		xs++;
	}
	for(int i=0; i<d/2; i++){
		push();
		xs++;
		ys++;
	}
	push();
	ys++;
	for(int i=0; i<d/2; i++){
		push();
		xs--;
		ys--;
	}
	for(int i=0; i<a/2; i++){
		push();
		xs--;
	}
	push();
	xs--;
	ys--;
	for(int i=0; i<b/2; i++){
		push();
		ys--;
	}
	for(int i=0; i<c/2; i++){
		push();
		xs++;
		ys--;
	}
	push();
	xs++;
	for(int i=0; i<c/2; i++){
		push();
		xs--;
		ys++;
	}
	for(int i=0; i<b/2; i++){
		push();
		ys++;
	}
	assert(xs==0 && ys==0);
}


int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> a >> b >> c >> d;
	if(a==0 && b==0){
		slucaj5();
	}
	else if(a%2==0 && b%2==0 && c%2==0 && d%2==0){
		slucaj1();
	}
	else if(a%2==0 && b%2==0 && c%2 && d%2){
		slucaj2();
	}
	else if(a%2 && b%2 && d%2){
		slucaj3();
	}
	else{
		slucaj4();
	}
	for(int i=0; i<sol.size(); i++){
		cout << sol[i].first << " " << sol[i].second << '\n';
	}
	return 0;
}

Compilation message (stderr)

pick.cpp: In function 'int main()':
pick.cpp:419:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<sol.size(); i++){
               ~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 20