Submission #496086

#	Time	Username	Problem	Language	Result	Execution time	Memory
496086		khoabright	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	204 KiB

remittance

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ll long long
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
#define rep(i, a, b) for (int i = (int)a; i <= (int)b; ++i)
#define rep1(i, a, b) for (int i = (int)a; i >= (int)b; --i)
#define all(x) x.begin(), x.end()
#define sp(x) setprecision(x) << fixed
typedef long double db;

const int N = 1e6 + 5;
const int inf = 1e9;

bool solve() {
    int n; cin >> n;
    vector<int> a(n + 1), b(n + 1);
    rep(i, 1, n) cin >> a[i] >> b[i];

    bool change = 1;
    while (change) {
        change = 0;
//        rep(i, 1, n) cout << a[i] << ' ' << b[i] << '\n';
//        cout << '\n';
        rep(i, 1, n) {
            int nx = (i == n) ? 1 : i + 1;
            int add = (a[i] - b[i]) / 2;
            if (add > 0) {
                 //   cout<<"i,add="<<i<<' '<<add<<'\n';
                a[nx] += add;
                a[i] -= 2 * add;
                change = 1;
            }
        }
    }

    rep(i, 1, n) if (a[i] != b[i]) return false;
    return true;
}

main() {
    ios_base::sync_with_stdio(0); cin.tie(0);

    cout << (solve() ? "Yes" : "No");
}

Compilation message (stderr)

remittance.cpp:45:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   45 | main() {
      | ^~~~

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