Submission #447985

#	Time	Username	Problem	Language	Result	Execution time	Memory
447985		cheissmart	Remittance (JOI19_remittance)	C++14	100 / 100	278 ms	36448 KiB

remittance

#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

string _reset = "\u001b[0m", _yellow = "\u001b[33m", _bold = "\u001b[1m";
void DBG() { cerr << "]" << _reset << endl; }
template<class H, class...T> void DBG(H h, T ...t) {
	cerr << to_string(h);
	if(sizeof ...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef CHEISSMART
#define debug(...) cerr << _yellow << _bold << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define debug(...)
#endif

const int INF = 1e9 + 7;

signed main()
{
	IO_OP;

	int n;
	cin >> n;
	V<ll> a(n), b(n);
	for(int i = 0; i < n; i++)
		cin >> a[i] >> b[i];
	while(true) {
		bool change = false;
		for(int i = 0; i < n; i++) {
			ll move = 0;
			if(a[i] > b[i]) {
				if(b[i] == 0) move = a[i] / 2;
				else move = (a[i] - b[i] + 1) / 2;
			}
			a[i] -= move * 2;
			a[(i + 1) % n] += move;
			if(move) change = true;
		}
		if(!change) break;
	}
	cout << (a == b ? "Yes" : "No") << '\n';

}

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