Submission #1148948

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148948		Issa	Remittance (JOI19_remittance)	C++20	15 / 100	0 ms	328 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"

const int maxn = 1e6 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e7 + 100;
const ll MOD = 1e9 + 7;
const int maxl = 16;
const ll P = 31;

int n;
ll a[maxn];
ll b[maxn];
ll d[maxn];
ll c[maxn];

void test(){
	cin >> n;
	for(int i = 0; i < n; i++){
		cin >> a[i] >> b[i];
	} a[n] = a[0]; b[n] = b[0];
	for(int i = 0; i < n; i++){
		if(1 & (a[i+1] ^ b[i+1])) c[i] = 1;
	} c[n] = c[0];
	for(int k = 1; k < 50; k++){
		for(int i = 0; i < n; i++){
			if(((c[i] + a[i+1] - b[i+1])>>1) % (1ll<<k) != c[i+1]){
				c[i] |= (1ll<<k);
			}
		} c[n] = c[0];
	} for(int _ = 0, i = 0; _ < n * 50; _++){
		int j = (i + 1) % n;
		ll cnt = min(a[i] / 2, c[i]);
		a[i] -= cnt * 2; c[i] -= cnt;
		a[j] += cnt; i = j;
	} for(int i = 0; i < n; i++){
		if(a[i] != b[i]){
			cout << "No\n";
			return;
		}
	} cout << "Yes\n";
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int t; t = 1;
	while(t--) test();
}

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