#903227 (C++17) No.2420 Simple Problem

• 問題: No.2420 Simple Problem
• ユーザー: deuteridayo
• 提出日時: 2023-08-12 15:53:37
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 571 ms / 2,000 ms
• コード長: 4,808 bytes
• コンパイル時間: 3,914 ms
• コンパイル使用メモリ: 266,132 KB
• 実行使用メモリ: 7,508 KB
• 最終ジャッジ日時: 2024-04-30 10:25:48
• 合計ジャッジ時間: 21,920 ms
• ジャッジサーバーID （参考情報）: judge5 / judge4

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 6,812 KB
testcase_01	AC	221 ms; 6,944 KB
testcase_02	AC	4 ms; 6,944 KB
testcase_03	AC	83 ms; 6,944 KB
testcase_04	AC	417 ms; 6,944 KB
testcase_05	AC	271 ms; 6,940 KB
testcase_06	AC	530 ms; 7,504 KB
testcase_07	AC	530 ms; 7,376 KB
testcase_08	AC	527 ms; 7,376 KB
testcase_09	AC	536 ms; 7,372 KB
testcase_10	AC	538 ms; 7,372 KB
testcase_11	AC	531 ms; 7,424 KB
testcase_12	AC	530 ms; 7,376 KB
testcase_13	AC	518 ms; 7,376 KB
testcase_14	AC	532 ms; 7,376 KB
testcase_15	AC	544 ms; 7,424 KB
testcase_16	AC	562 ms; 7,376 KB
testcase_17	AC	569 ms; 7,504 KB
testcase_18	AC	571 ms; 7,376 KB
testcase_19	AC	530 ms; 7,380 KB
testcase_20	AC	530 ms; 7,508 KB
testcase_21	AC	537 ms; 7,376 KB
testcase_22	AC	533 ms; 7,372 KB
testcase_23	AC	552 ms; 7,376 KB
testcase_24	AC	526 ms; 7,504 KB
testcase_25	AC	560 ms; 7,376 KB
testcase_26	AC	2 ms; 6,944 KB
testcase_27	AC	416 ms; 6,940 KB
testcase_28	AC	430 ms; 6,940 KB
testcase_29	AC	423 ms; 6,944 KB
testcase_30	AC	422 ms; 6,944 KB
testcase_31	AC	413 ms; 6,940 KB
testcase_32	AC	2 ms; 6,940 KB
testcase_33	AC	214 ms; 6,940 KB

ソースコード

#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
using lint = long long;
using ulint = unsigned long long;
using llint = __int128;
#define endl '\n'
lint const mod107 = 1e9+7;
using mint107 = modint1000000007;
long const mod = 998244353;
using mint = modint998244353;

int const INF = 1<<30;
lint const INF64 = 1LL<<61;
lint ceilDiv(lint x, lint y){if(x >= 0){return (x+y-1)/y;}else{return x/y;}}
lint floorDiv(lint x, lint y){if(x >= 0){return x/y;}else{return (x-y+1)/y;}}
lint Sqrt(lint x){lint upper = 1e9;lint lower = 0;while(upper - lower > 0){lint mid = (1+upper + lower)/2;if(mid * mid > x){upper = mid-1;}else{lower = mid;}}return upper;}
lint gcd(lint a,lint b){if(a<b)swap(a,b);if(a%b==0)return b;else return gcd(b,a%b);}
lint lcm(lint a,lint b){return (a / gcd(a,b)) * b;}
lint chmin(vector<lint>&v){lint ans = INF64;for(lint i:v){ans = min(ans, i);}return ans;}
lint chmax(vector<lint>&v){lint ans = -INF64;for(lint i:v){ans = max(ans, i);}return ans;}
double dist(double x1, double y1, double x2, double y2){return sqrt(pow(x1-x2, 2) + pow(y1-y2,2));}
string toString(lint n){string ans = "";if(n == 0){ans += "0";}else{while(n > 0){int a = n%10;char b = '0' + a;string c = "";c += b;n /= 10;ans = c + ans;}}return ans;}
string toString(lint n, lint k){string ans = toString(n);string tmp = "";while(ans.length() + tmp.length() < k){tmp += "0";}return tmp + ans;}
vector<lint>prime;void makePrime(lint n){prime.push_back(2);for(lint i=3;i<=n;i+=2){bool chk = true;for(lint j=0;j<prime.size() && prime[j]*prime[j] <= i;j++){if(i % prime[j]==0){chk=false;break;}}if(chk)prime.push_back(i);}}
lint Kai[20000001]; bool firstCallnCr = true; 
lint ncrmodp(lint n,lint r,lint p){ if(firstCallnCr){ Kai[0] = 1; for(int i=1;i<=20000000;i++){ Kai[i] = Kai[i-1] * i; Kai[i] %= p;} firstCallnCr = false;} if(n<0)return 0;
if(n < r)return 0;if(n==0)return 1;lint ans = Kai[n];lint tmp = (Kai[r] * Kai[n-r]) % p;for(lint i=1;i<=p-2;i*=2){if(i & p-2){ans *= tmp;ans %= p;}tmp *= tmp;tmp %= p;}return ans;}
#define rep(i, n) for(int i = 0; i < n; i++)
#define repp(i, x, y) for(int i = x; i < y; i++)
#define vec vector
#define pb push_back
#define se second
#define fi first
#define all(x) x.begin(),x.end()
unsigned long long Rand(){
  static unsigned long long x=88172645463325252LL;
  x^=(x<<13);
  x^=(x>>7);
  return (x^=(x<<17));
}

struct Frac {
    lint upper, lower;
    Frac() {
        Frac(0,1);
    }
    Frac(lint u, lint l) {
        assert(l != 0);
        if(u <= 0 && l < 0) {
            upper = -u;
            lower = -l;
        } else {
            upper = u;
            lower = l;
        }
        reduction();
    }

    Frac(lint u) {
        upper = u;
        lower = 1;
    } 

    void reduction() {
        if(upper != 0) {
            lint g = gcd(abs(upper), abs(lower));
            upper /= g;
            lower /= g;
        
            if(lower < 0) {
                lower *= -1;
                upper *= -1;
            }
        } else {
            lower = 1;
        }
    }

    Frac operator+(const Frac &other) {
        lint L = lower * other.lower;
        lint U = upper*other.lower + lower*other.upper;
        return Frac(U, L);
    }

    Frac operator-(const Frac &other) {
        lint L = lower * other.lower;
        lint U = upper*other.lower - lower*other.upper;
        upper = U;
        lower = L;
        return Frac(U, L);
    }

    bool operator<=(const Frac &other) {
        return upper*other.lower <= lower*other.upper;
    }

    Frac operator*(const Frac &other) {
        lint L = lower * other.lower;
        lint U = upper * other.upper;
        return Frac(U, L);
    }

    Frac operator/(const Frac &other) {
        assert(other.upper != 0);
        lint L = lower * other.upper;
        lint U = upper * other.lower;
        return Frac(U, L);
    }
};

bool operator<(const Frac &left, const Frac &right) {
    return left.upper*right.lower < left.lower*right.upper;
}

struct edge{
    int to;
};
using graph = vector<vector<edge>>;


int main(){
    using llint = __int128_t;
    lint n;
    cin >> n;
    lint a[n], b[n];
    rep(i, n) {
        cin >> a[i] >> b[i];
        llint A = a[i], B = b[i];
        llint upper = 1e5;
        llint lower = 1;
        while(upper > lower) {
            // cerr << (lint)upper << endl;
            llint mid = (upper + lower)/2;
            if(mid* mid - A - B < 0) {
                lower = mid+1;
                continue;
            }
            if(4*A*B < (mid*mid-A-B) * (mid*mid-A-B)){
                upper = mid;
            } else {
                lower = mid + 1;
            }
            // cerr <<(lint)upper << " " << (lint)lower << " " <<  (lint)mid << endl;
        }
        cout << (lint)upper << endl;
    }
    

}