結果
| 問題 |
No.1120 Strange Teacher
|
| コンテスト | |
| ユーザー |
opt
|
| 提出日時 | 2020-07-22 21:33:56 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 22 ms / 1,000 ms |
| コード長 | 2,860 bytes |
| コンパイル時間 | 2,001 ms |
| コンパイル使用メモリ | 195,168 KB |
| 最終ジャッジ日時 | 2025-01-12 02:16:59 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
#include <bits/stdc++.h>
#define _GLIBCXX_DEBUG
using namespace std;
using ll = long long;
using ld = long double;
using V = vector<int>;
using Vll = vector<ll>;
using Vld = vector<ld>;
using Vbo = vector<bool>;
using VV = vector<V>;
using VVll = vector<Vll>;
using VVld = vector<Vld>;
using VVbo = vector<Vbo>;
using VVV = vector<VV>;
using VVVll = vector<VVll>;
using P = pair<int, int>;
using Pll = pair<ll, ll>;
using Pld = pair<ld, ld>;
#define rep2(i, m, n) for (int i = (m); i < (n); ++i)
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define rep(i, n) rep2(i, 0, n)
#define drep(i, n) drep2(i, n, 0)
#define all(a) (a).begin(), (a).end()
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
template<typename T> inline int sz(T &x) { return x.size(); }
template<typename T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; }
template<typename T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; }
template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; }
template<typename T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; }
template<typename T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<typename T> inline int count_between(vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r)
inline int fLog2(const int x) { return 31-__builtin_clz(x); } // floor(log2(x))
inline int fLog2(const ll x) { return 63-__builtin_clzll(x); }
inline int cLog2(const int x) { return (x == 1) ? 0 : 32-__builtin_clz(x-1); } // ceil(log2(x))
inline int cLog2(const ll x) { return (x == 1) ? 0 : 64-__builtin_clzll(x-1); }
inline int popcount(const int x) { return __builtin_popcount(x); }
inline int popcount(const ll x) { return __builtin_popcountll(x); }
const int INF = 1<<30;
const ll INFll = 1ll<<62;
const ld EPS = 1e-10;
const ld PI = acos(-1.0);
// const int MOD = int(1e9)+7;
// const int MOD = 998244353;
int main() {
ll n; cin >> n;
Vll a(n), b(n);
cin >> a >> b;
ll sa = 0;
ll sb = 0;
rep(i, n) sa += a[i];
rep(i, n) sb += b[i];
if (n == 2) {
if (sa != sb) cout << -1 << '\n';
else cout << abs(a[0] - b[1]) << '\n';
return 0;
}
if (sa < sb && (sa-sb) % (n-2) != 0) {
cout << -1 << '\n';
return 0;
}
ll k = (sa-sb) / (n-2);
rep(i, n) {
ll x = b[i] - a[i] + k;
if (x < 0 || x % 2 == 1) {
cout << -1 << '\n';
return 0;
}
}
cout << k << '\n';
return 0;
}
opt