結果

問題 No.2667 Constrained Permutation
ユーザー woodywoodywoodywoody
提出日時 2024-03-08 22:19:33
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 1,063 ms / 2,000 ms
コード長 5,810 bytes
コンパイル時間 4,121 ms
コンパイル使用メモリ 238,772 KB
実行使用メモリ 21,532 KB
最終ジャッジ日時 2024-09-29 19:50:25
合計ジャッジ時間 19,649 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge1
このコードへのチャレンジ
（要ログイン）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
6,816 KB
testcase_01 AC 2 ms
6,816 KB
testcase_02 AC 3 ms
6,816 KB
testcase_03 AC 4 ms
6,816 KB
testcase_04 AC 5 ms
6,816 KB
testcase_05 AC 2 ms
6,816 KB
testcase_06 AC 4 ms
6,820 KB
testcase_07 AC 2 ms
6,816 KB
testcase_08 AC 6 ms
6,816 KB
testcase_09 AC 6 ms
6,816 KB
testcase_10 AC 4 ms
6,820 KB
testcase_11 AC 4 ms
6,816 KB
testcase_12 AC 335 ms
9,444 KB
testcase_13 AC 10 ms
6,816 KB
testcase_14 AC 933 ms
19,836 KB
testcase_15 AC 642 ms
17,724 KB
testcase_16 AC 420 ms
13,124 KB
testcase_17 AC 133 ms
6,816 KB
testcase_18 AC 997 ms
20,912 KB
testcase_19 AC 1,044 ms
21,248 KB
testcase_20 AC 1,059 ms
20,928 KB
testcase_21 AC 818 ms
21,532 KB
testcase_22 AC 816 ms
21,348 KB
testcase_23 AC 821 ms
21,336 KB
testcase_24 AC 420 ms
11,188 KB
testcase_25 AC 808 ms
18,092 KB
testcase_26 AC 1,063 ms
20,924 KB
testcase_27 AC 948 ms
20,868 KB
testcase_28 AC 64 ms
15,864 KB
testcase_29 AC 60 ms
15,412 KB
testcase_30 AC 65 ms
16,736 KB
testcase_31 AC 41 ms
11,316 KB
testcase_32 AC 9 ms
6,820 KB
testcase_33 AC 92 ms
20,596 KB
testcase_34 AC 49 ms
12,800 KB
testcase_35 AC 58 ms
14,208 KB
testcase_36 AC 55 ms
13,564 KB
testcase_37 AC 61 ms
15,104 KB
testcase_38 AC 625 ms
16,872 KB
testcase_39 AC 8 ms
6,816 KB
testcase_40 AC 50 ms
12,160 KB
testcase_41 AC 78 ms
17,604 KB
testcase_42 AC 582 ms
13,144 KB
testcase_43 AC 794 ms
17,668 KB
testcase_44 AC 371 ms
9,444 KB
testcase_45 AC 10 ms
6,820 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include<bits/stdc++.h>
#include<atcoder/all>
#define rep(i,b) for(int i=0;i<b;i++)
#define rrep(i,b) for(int i=b-1;i>=0;i--)
#define rep1(i,b) for(int i=1;i<b;i++)
#define repx(i,x,b) for(int i=x;i<b;i++)
#define rrepx(i,x,b) for(int i=b-1;i>=x;i--)
#define fore(i,a) for(auto& i:a)
#define rng(x) (x).begin(), (x).end()
#define rrng(x) (x).rbegin(), (x).rend()
#define sz(x) ((int)(x).size())
#define pb push_back
#define fi first
#define se second
#define pcnt __builtin_popcountll

using namespace std;
using namespace atcoder;

using ll = long long;
using ld = long double;
template<typename T> using mpq = priority_queue<T, vector<T>, greater<T>>;
template<typename T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<typename T> bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<typename T> ll sumv(const vector<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;}
bool yn(bool a) { if(a) {cout << "Yes" << endl; return true;} else {cout << "No" << endl; return false;}}
#define retval(x) {cout << #x << endl; return;}
#define cout2(x,y) cout << x << " " << y << endl;
#define coutp(p) cout << p.fi << " " << p.se << endl;
#define out cout << ans << endl;
#define outd cout << fixed << setprecision(20) << ans << endl;
#define outm cout << ans.val() << endl;
#define outv fore(yans , ans) cout << yans << "\n";
#define outdv fore(yans , ans) cout << yans.val() << "\n";
#define assertmle(x) if (!(x)) {vi v(3e8);}
#define asserttle(x) if (!(x)) {while(1){}}
#define coutv(v) {fore(vy , v) {cout << vy << " ";} cout << endl;}
#define coutv2(v) fore(vy , v) cout << vy << "\n";
#define coutvm(v) {fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define coutvm2(v) fore(vy , v) cout << vy.val() << "\n";
using pll = pair<ll,ll>;using pil = pair<int,ll>;using pli = pair<ll,int>;using pii = pair<int,int>;using pdd = pair<ld,ld>;
using vi = vector<int>;using vd = vector<ld>;using vl = vector<ll>;using vs = vector<string>;using vb = vector<bool>;
using vpii = vector<pii>;using vpli = vector<pli>;using vpll = vector<pll>;using vpil = vector<pil>;
using vvi = vector<vector<int>>;using vvl = vector<vector<ll>>;using vvs = vector<vector<string>>;using vvb = vector<vector<bool>>;
using vvpii = vector<vector<pii>>;using vvpli = vector<vector<pli>>;using vvpll = vector<vpll>;using vvpil = vector<vpil>;
using mint = modint998244353;
//using mint = modint1000000007;
//using mint = dynamic_modint<0>;
using vm = vector<mint>;
using vvm = vector<vector<mint>>;
vector<int> dx={1,0,-1,0,1,1,-1,-1},dy={0,1,0,-1,1,-1,1,-1};
ll gcd(ll a, ll b) { return a?gcd(b%a,a):b;}
ll lcm(ll a, ll b) { return a/gcd(a,b)*b;}
#define yes {cout <<"Yes"<<endl;}
#define no {cout <<"No"<<endl;}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#ifdef MY_LOCAL_DEBUG
#include "./debug/localDebug.cpp"
#define showp(p) cerr<<#p<<" = "<<p.fi<<" : "<<p.se<<endl
#define show1(a) cerr<<#a<<" = "<<a<<endl
#define show2(a,b) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<endl
#define show3(a,b,c) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<endl
#define show4(a,b,c,d) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<" : "<<#d<<" = "<<d<<endl
#define show5(a,b,c,d,e) cerr<<#a<<" = "<<a<<" : "<<#b<<" = "<<b<<" : "<<#c<<" = "<<c<<" : "<<#d<<" = "<<d<<" : "<<#e<<" = "<<e<<endl
#define DEBUG_LINE cout << "DEBUG_LINE : " << __LINE__ << endl
#define showv(v) {cout<<#v<<" : "; fore(vy , v) {cout << vy << " ";} cout << endl;}
#define showv2(v) {cout<<#v<<endl; fore(vy , v) cout << vy << "\n";}
#define showvm(v) {cout<<#v<<" : "; fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define showvm2(v) {cout<<#v<<endl; fore(vy , v) cout << vy.val() << "\n";}
#define showmat(v) {cout<<#v<<endl; fore(row , v) { fore(seg , row) cout << seg << " "; cout << endl;}}
#define showmatm(v) {cout<<#v<<endl; fore(row , v) { fore(seg , row) cout << seg.val() << " "; cout << endl;}}
#else
#define showp(p)
#define show1(a)
#define show2(a,b)
#define show3(a,b,c)
#define show4(a,b,c,d)
#define show5(a,b,c,d,e)
#define DEBUG_LINE
#define showv(v)
#define showv2(v)
#define showvm(v)
#define showvm2(v)
#define showmat(v)
#define showmatm(v)
#endif
#define overload5(a,b,c,d,e,f, ...) f
#define show(...) overload5(__VA_ARGS__, show5, show4, show3, show2, show1)(__VA_ARGS__)

void solve(){
    int n; cin>>n;
    vl l(n),r(n);
    rep(i,n) cin>>l[i]>>r[i];

    vpll v(n);
    rep(i,n) v[i] = {l[i]+INF, r[i]+INF};
    sort(rng(v));
    ll mx = 0;
    rep(i,n) chmax(mx, v[i].fi-(i));
    rep(i,n){
        l[i] = (l[i]+INF) - mx;
        r[i] = (r[i]+INF) - mx;
    }

    auto check = [&](ll mid)->bool{
        vpll v(n);
        rep(i,n){
            v[i] = {l[i] - mid, r[i] - mid};
        }
        sort(rng(v));
        mpq<ll> q;
        bool ret = true;
        int id = 0;
        vvi ev(n);
        while(id < n && v[id].fi <= 0){
            q.push(v[id].se);
            id++;
        }
        repx(i,id,n){
            ev[v[i].fi].pb(v[i].se);
        }
        rep(i,n){
            fore(y, ev[i]){
                q.push(y);
            }
            if (sz(q)==0){
                ret = false;
                break;
            }
            ll t = q.top();
            q.pop();
            if (t < i){
                ret = false;
                break;
            }
        }
        return ret;
    };
    if (!check(0)){
        retval(0);
    }

    ll li = 0, ui = INF;
    while(ui - li > 1){
        ll mid = (li+ui) / 2;
        if (check(mid)) li = mid;
        else ui = mid;
    }
    ll ans = li + 1;
    out;

    return;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    //cin>>t;

    rep(i,t){
        solve();
    }

    return 0;
}
0