結果
問題 | No.1120 Strange Teacher |
ユーザー | satashun |
提出日時 | 2020-07-22 21:27:58 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 23 ms / 1,000 ms |
コード長 | 2,261 bytes |
コンパイル時間 | 2,035 ms |
コンパイル使用メモリ | 194,992 KB |
最終ジャッジ日時 | 2025-01-12 02:09:06 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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> using namespace std; using ll = long long; using pii = pair<int, int>; template <class T> using V = vector<T>; template <class T> using VV = V<V<T>>; #define pb push_back #define eb emplace_back #define mp make_pair #define fi first #define se second #define rep(i, n) rep2(i, 0, n) #define rep2(i, m, n) for (int i = m; i < (n); i++) #define per(i, b) per2(i, 0, b) #define per2(i, a, b) for (int i = int(b) - 1; i >= int(a); i--) #define ALL(c) (c).begin(), (c).end() constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); } template <class T, class U> void chmin(T& t, const U& u) { if (t > u) t = u; } template <class T, class U> void chmax(T& t, const U& u) { if (t < u) t = u; } template <class T, class U> ostream& operator<<(ostream& os, const pair<T, U>& p) { os << "(" << p.first << "," << p.second << ")"; return os; } template <class T> ostream& operator<<(ostream& os, const vector<T>& v) { os << "{"; rep(i, v.size()) { if (i) os << ","; os << v[i]; } os << "}"; return os; } #ifdef LOCAL void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << H; debug_out(T...); } #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int N; cin >> N; V<ll> d(N); rep(i, N) { int x; cin >> x; d[i] -= x; } rep(i, N) { int x; cin >> x; d[i] += x; } debug(d); ll s = 0; rep(i, N) s += d[i]; if (N == 2) { if (s == 0) cout << abs(d[0]) << endl; else cout << -1 << endl; return 0; } if (s <= 0 && s % (N - 2) != 0) { cout << -1 << endl; return 0; } ll num = abs(s) / (N - 2); rep(i, N) { d[i] += num; if (d[i] < 0 || d[i] % 2 != 0) { cout << -1 << endl; return 0; } } cout << num << endl; return 0; }