結果
問題 | No.1120 Strange Teacher |
ユーザー |
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提出日時 | 2020-07-22 22:08:13 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 32 ms / 1,000 ms |
コード長 | 2,986 bytes |
コンパイル時間 | 3,039 ms |
コンパイル使用メモリ | 197,104 KB |
最終ジャッジ日時 | 2025-01-12 02:54:26 |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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
#ifdef LOCAL#define _GLIBCXX_DEBUG#endif#include<bits/stdc++.h>using namespace std;#define rep(i,s,t) for(ll i = (ll)(s); i < (ll)(t); i++)#define rrep(i,s,t) for(ll i = (ll)(s-1);(ll)(t) <= i; i--)#define all(x) (x).begin(), (x).end()typedef long long ll;typedef long double ld;typedef pair<ll,ll> Pll;typedef vector<ll> vl;typedef vector<vl> vvl;typedef vector<vvl> vvvl;constexpr ll INF = numeric_limits<ll>::max()/4;constexpr ll n_max = 2e5+10;#define int lltemplate <typename A, typename B>string to_string(pair<A, B> p);string to_string(const string &s) {return '"' + s + '"';}string to_string(const char *c) {return to_string((string) c);}string to_string(bool b) {return (b ? "true" : "false");}template <size_t N>string to_string(bitset<N> v){string res = "";for(size_t i = 0; i < N; i++) res += static_cast<char>('0' + v[i]);return res;}template <typename A>string to_string(A v) {bool first = true;string res = "{";for(const auto &x : v) {if(!first) res += ", ";first = false;res += to_string(x);}res += "}";return res;}template <typename A, typename B>string to_string(pair<A, B> p){return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";}void debug_out() {cerr << endl;}template<typename Head, typename... Tail>void debug_out(Head H, Tail... T) {cerr << " " << to_string(H);debug_out(T...);}#ifdef LOCAL#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)#else#define debug(...) 42#endiftemplate<class T>bool chmax(T &a, T b){if(a < b){a = b; return true;} return false;}template<class T>bool chmin(T &a, T b){if(a > b){a = b; return true;} return false;}signed main(){cin.tie(nullptr);ios::sync_with_stdio(false);ll n; cin >> n;vector<ll> a(n);for(int i = 0; i < n; i++) cin >> a[i];vector<ll> b(n);for(int i = 0; i < n; i++) cin >> b[i];ll tmp = 0;rep(i,0,n){tmp += abs(a[i] - b[i]) % 2;}if(tmp != 0 && tmp != n){cout << -1 << "\n";return 0;}auto c = [&](ll x){rep(i,0,n)a[i] -= x;ll sum = 0;bool ok = true;rep(i,0,n){if(b[i] < a[i]){ok = false;}if((b[i] - a[i]) & 1) ok = false;sum += (b[i] - a[i]) / 2;}ok &= sum == x;if(ok){cout << sum << "\n";}else{cout << -1 << "\n";}};ll asum = 0, bsum = 0;rep(i,0,n){asum += a[i];bsum += b[i];}ll t = n - 2;if(t == 0){if(asum == bsum){cout << abs(a[0] - b[0]) << "\n";}else{cout << -1 << "\n";}return 0;}if((asum - bsum) < 0 || (asum - bsum) % t != 0){cout << -1 << "\n";}else{ll x = (asum - bsum) / t;c(x);}}