Submission #428730

#	Time	Username	Problem	Language	Result	Execution time	Memory
428730		abdzag	Remittance (JOI19_remittance)	C++17	100 / 100	802 ms	36428 KiB

remittance

#include<bits/stdc++.h>
#include<unordered_map>
#include<unordered_set>
#define rep(i,a,b) for(int i=int(a);i<int(b);i++)
#define rrep(i,a,b) for(int i=int(a);i>int(b);i--)
#define trav(a,v) for(auto& a: v)
#define sz(v) v.size()
#define all(v) v.begin(),v.end()
#define vi vector<int>

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
const long long inf = 2e9;

using namespace std;


int main() {
	cin.sync_with_stdio(false);
	ll n;
	cin >> n;
	vector<ll> a(n);
	vector<ll> b(n);
	rep(i, 0, n)cin >> a[i] >> b[i];
	rep(i, 0, n*50) {
		ll ind = i % n;
		ll nxt = (i + 1) % n;
		if (a[ind] <= b[ind])continue;
		ll change = a[ind] - b[ind];
		change += change % 2;
		if (a[ind] < change)continue;
		a[nxt] += change/2;
		a[ind] -= change;
	}
	if (a == b)cout << "Yes";
	else cout << "No";
	return 0;
}

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