Submission #433869

#	Time	Username	Problem	Language	Result	Execution time	Memory
433869		ismoilov	Remittance (JOI19_remittance)	C++14	0 / 100	1 ms	204 KiB

remittance

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define IOS ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define fp(a,i,c) for(int (a) = (i); (a) < (c); (a)++)
#define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
#define fm(a,i,c) for(int (a) = (i); (a) > (c); (a)--)
#define fmm(a,i,c) for(int (a) = (i); (a) >= (c); (a)--)
bool check(int n)
{
   if(n==0)
   return 1;
   
   return (ceil(log2(n)) == floor(log2(n)));
}
void S()
{
	int n;
	cin >> n;
	vector <int> b(n);
	fp(i,0,n){
		int x, y;
		cin >> x >> y;
		b[i] = x - y;
	}
	/*if(done){
		cout << "Yes";
		return;
	}*/
//	cout << endl;
	bool yes = 0;
	fp(i,0,n){
		vector <int> a;
		a = b;
		if(a[i] < 0)
			continue;
		int s = a[i] / 2;
		a[i] %= 2;
		bool ok = 1;
	//	cout << i << " " << s << endl;
		fpp(j,1,2*n){
			a[(i+j)%n] += s;
		//	cout << i << " " << j << " " << a[(i+j)%n] << " " << s << endl;
			if(a[(i+j)%n] < 0){
				ok = 0;
				break;
			}
			s = a[(i+j)%n]/2;
			a[(i+j)%n] %= 2;
			if(j > n)
				ok &= (a[(i+j)%n] == 0);
		}
		yes |= (ok && s == 0);
	}
	cout << (yes ? "Yes" : "No");
}
int main()
{
	IOS;
	S();
}

Compilation message (stderr)

remittance.cpp: In function 'void S()':
remittance.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define fp(a,i,c) for(int (a) = (i); (a) < (c); (a)++)
      |                           ^
remittance.cpp:22:2: note: in expansion of macro 'fp'
   22 |  fp(i,0,n){
      |  ^~
remittance.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define fp(a,i,c) for(int (a) = (i); (a) < (c); (a)++)
      |                           ^
remittance.cpp:33:2: note: in expansion of macro 'fp'
   33 |  fp(i,0,n){
      |  ^~
remittance.cpp:7:28: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
    7 | #define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
      |                            ^
remittance.cpp:42:3: note: in expansion of macro 'fpp'
   42 |   fpp(j,1,2*n){
      |   ^~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45