結果
| 問題 |
No.1008 Bench Craftsman
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-03-06 22:47:06 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 183 ms / 2,000 ms |
| コード長 | 4,038 bytes |
| コンパイル時間 | 1,749 ms |
| コンパイル使用メモリ | 173,172 KB |
| 実行使用メモリ | 8,064 KB |
| 最終ジャッジ日時 | 2024-10-14 09:13:34 |
| 合計ジャッジ時間 | 6,023 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 lint = long long;
const lint mod = 1e9 + 7;
#define all(x) (x).begin(), (x).end()
#define bitcount(n) __builtin_popcountl((lint)(n))
#define fcout cout << fixed << setprecision(15)
#define highest(x) (63 - __builtin_clzl(x))
template<class T> inline void YES(T condition){ if(condition) cout << "YES" << endl; else cout << "NO" << endl; }
template<class T> inline void Yes(T condition){ if(condition) cout << "Yes" << endl; else cout << "No" << endl; }
template<class T = string, class U = char>int character_count(T text, U character){ int ans = 0; for(U i: text){ ans += (i == character); } return ans; }
lint power(lint base, lint exponent, lint module){ if(exponent % 2){ return power(base, exponent - 1, module) * base % module; }else if(exponent){ lint root_ans = power(base, exponent / 2, module); return root_ans * root_ans % module; }else{ return 1; }}
struct position{ int y, x; }; position mv[4] = {{0, -1}, {1, 0}, {0, 1}, {-1, 0}}; // double euclidean(position first, position second){ return sqrt((second.x - first.x) * (second.x - first.x) + (second.y - first.y) * (second.y - first.y)); }
template<class T, class U> string to_string(pair<T, U> x){ return to_string(x.first) + "," + to_string(x.second); } string to_string(string x){ return x; }
template<class itr> void array_output(itr start, itr goal){ string ans; for(auto i = start; i != goal; i++) ans += to_string(*i) + " "; if(!ans.empty()) ans.pop_back(); cout << ans << endl; }
template<class itr> void cins(itr first, itr last){ for(auto i = first; i != last; i++){ cin >> (*i); } }
template<class T> T gcd(T a, T b){ if(a && b){ return gcd(min(a, b), max(a, b) % min(a, b)); }else{ return a; }} template<class T> T lcm(T a, T b){ return a / gcd(a, b) * b; }
struct combination{ vector<lint> fact, inv; combination(int sz) : fact(sz + 1), inv(sz + 1){ fact[0] = 1; for(int i = 1; i <= sz; i++){ fact[i] = fact[i - 1] * i % mod; } inv[sz] = power(fact[sz], mod - 2, mod); for(int i = sz - 1; i >= 0; i--){ inv[i] = inv[i + 1] * (i + 1) % mod; } } lint C(int p, int q) const{ if(q < 0 || p < q) return 0; return (fact[p] * inv[q] % mod * inv[p - q] % mod); } };
template<class itr> bool next_sequence(itr first, itr last, int max_bound){ itr now = last; while(now != first){ now--; (*now)++; if((*now) == max_bound){ (*now) = 0; }else{ return true; } } return false; }
int N, M;
vector<lint> a, x, w;
bool is_ok(lint c){
int sz = 1e5 + 100;
vector<lint> arr(sz * 3, 0);
for(int i = 0; i < M; i++){
lint center = x[i] + 1, size = (w[i] + c - 1) / c;
arr[center - size + sz] += c;
arr[center + sz] -= c * 2;
arr[center + size + sz] += c;
//cout << center << " " << size << endl;
}
for(int i = 0; i < sz * 3 - 1; i++){
arr[i + 1] += arr[i];
}
for(int i = 0; i < M; i++){
lint center = x[i] + 1, size = (w[i] + c - 1) / c;
arr[center - size + sz] -= size * c - w[i];
arr[center + size - 1 + sz] += size * c - w[i];
}
for(int i = 0; i < sz * 3 - 1; i++){
arr[i + 1] += arr[i];
}
/*cout << c << " -> ";
array_output(arr.begin() + sz - 10, arr.begin() + sz + N + 10);*/
for(int i = 0; i < N; i++){
if(arr[i + sz] >= a[i]){
return false;
}
}
return true;
}
int main(){
cin >> N >> M;
a.resize(N);
cins(all(a));
x.resize(M);
w.resize(M);
for(int i = 0; i < M; i++){
cin >> x[i] >> w[i];
x[i]--;
}
if(*min_element(all(a)) > accumulate(all(w), 0ll)){
cout << 0 << endl;
return 0;
}
is_ok(10);
lint c_max = 1e6;
lint low = 0, high = c_max; // (low, high]
while(low + 1 < high){
lint mid = (low + high) / 2;
//cout << mid << " " << is_ok(mid) << endl;
if(is_ok(mid)){
high = mid;
}else{
low = mid;
}
}
if(high == c_max){
cout << -1 << endl;
}else{
cout << high << endl;
}
}