結果
問題 | No.1830 Balanced Majority |
ユーザー |
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提出日時 | 2022-02-04 22:48:14 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,186 bytes |
コンパイル時間 | 2,130 ms |
コンパイル使用メモリ | 192,920 KB |
最終ジャッジ日時 | 2025-01-27 19:34:22 |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 19 WA * 6 |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using V = vector<ll>; using VV = vector<V>; using VVV = vector<VV>; using VVVV = vector<VVV>; using VVVVV = vector<VVVV>; using VVVVVV = vector<VVVVV>; using VS = vector<string>; using VB = vector<bool>; using VVB = vector<VB>; using P = pair<ll,ll>; using M = map<ll,ll>; using Q = queue<ll>; using PQ = priority_queue<ll>; using PQG = priority_queue<ll,V,greater<ll>>; using S = set<ll>; using VP = vector<P>; const ll MOD = 1000000007; const ll mod = 998244353; const ll INF = 1LL << 60; #define rep(i,n) for(ll i = 0; i < n; i++) #define rep2(i,s,n) for(ll i = s; i < n; i++) #define per(i,n) for(ll i = n-1; i >= 0; i--) #define per2(i,s,n) for(ll i = n-1; i >= s; i--) #define all(x) (x).begin(),(x).end() #define rall(x) (x).rbegin(),(x).rend() #define fi first #define se second #define pb push_back #define pf push_front #define ppb pop_back #define ppf pop_front #define eb emplace_back #define lb lower_bound #define ub upper_bound template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return true;}return false;} template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return true;}return false;} template<class T>void Vin(vector<T>&a){rep(i,(int)a.size())cin>>a[i];} template<class T>void VVin(vector<vector<T>>&a){rep(i,(ll)a.size())Vin(a[i]);} template<class T>void Vout(const vector<T>&a){rep(i,(ll)a.size()-1)cout<<a[i]<<" ";cout<<a.back()<<endl;} template<class T>void Voutl(const vector<T>&a){rep(i,(ll)a.size())cout<<a[i]<<endl;} ll power(ll a,ll b,const ll&M){a%=M;ll res=1;while(b>0){if(b&1)res=res*a%M;a=a*a%M;b>>=1;}return res;} const ll H[4] = {0,1,0,-1}, W[4] = {1,0,-1,0}; void f(int a, ll &b) { printf("? %d\n", a); cin >> b; b = b * 2 - a; } void g(int a, int b) { printf("! %d %d/n", a, b); } int main() { ll n; cin >> n; ll a, b; f(1, a); f(n-1, b); if(a == b) { g(2, n-1); return 0; } ll l = 1, r = n-1; while(r - l > 1) { ll mid = (r + l) / 2, c; f(mid,c); if(c == 0 || c == -1) { if(mid < n / 2) g(mid+1, n); else g(1, mid); return 0; } if(a * c < 0) r = mid; else l = mid; } }