Submission #1028788

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028788		underwaterkillerwhale	Remittance (JOI19_remittance)	C++17	0 / 100	1100 ms	396 KiB

remittance

#include <bits/stdc++.h>
#define se              second
#define fs              first
#define mp              make_pair
#define pb              push_back
#define ll              long long
#define ii              pair<ll,ll>
#define ld              long double
#define SZ(v)           (int)v.size()
#define ALL(v)          v.begin(), v.end()
#define bit(msk, i)     ((msk >> i) & 1)
#define iter(id, v)     for(auto id : v)
#define rep(i,m,n)      for(int i=(m); i<=(n); i++)
#define reb(i,m,n)      for(int i=(m); i>=(n); i--)
using namespace std;

mt19937_64 rd(chrono :: steady_clock :: now().time_since_epoch().count());
ll Rand(ll l, ll r) { return uniform_int_distribution<ll> (l, r)(rd); }

const int N = 2e5 + 7;
const int Mod = 1e9 + 7;
const int szBL = 320;
const int INF = 1e9;
const int BASE = 1337;

int n;
pair<int,int> a[N];

void solution () {
    cin >> n;
    rep (i, 1, n) cin >> a[i].fs >> a[i].se;
    queue<int> Q;
    rep (i, 1, n) {
        if (a[i].fs > a[i].se) Q.push(i);
    }
    while (!Q.empty()) {
        int u = Q.front();
        Q.pop();
        int nxt = 1 + u % n;
        a[nxt].fs += (a[u].fs - a[u].se) / 2;
        a[u].fs -= (a[u].fs - a[u].se) / 2 * 2;
        if (a[nxt].fs > a[nxt].se) Q.push(nxt);
    }
    rep (i, 1, n) if (a[i].fs != a[i].se) {
    cout <<"No\n"; return; }
    cout <<"Yes\n";
}

#define file(name) freopen(name".inp", "r", stdin); \
freopen(name".out", "w", stdout);

int main () {
//    file("c");
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ll num_Test = 1;
//    cin >> num_Test;
    while(num_Test--)
        solution();
}
/*
nếu mình nghĩ sẽ thay đổi định nghĩa, kiểu dữ liệu của hàm hay mảng j thì mình phải nghĩ xem nó sẽ ảnh hưởng đến các phần nào

*/

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