Submission #969896

#	Time	Username	Problem	Language	Result	Execution time	Memory
969896		VinhLuu	사다리꼴 (balkan11_trapezoid)	C++17	90 / 100	149 ms	65536 KiB

trapezoid

//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
//#define int long long
#define ll long long
#define fi first
#define se second
#define pb push_back
#define all(lmao) lmao.begin(), lmao.end()

using namespace std;

typedef pair<int,int> pii;
typedef tuple<int,int,int> tp;
const int N = 1e5 + 5;
const int M = 1e6 + 5;
const int mod = 30013;
//const ll oo = 5e18;

int n, mx = 0;
vector<pii> open[M], close[M];

int st[M << 1], t[M << 1], f[N], g[N];

void update(int i,int x,int cnt){
    i += mx - 1;
    if(st[i] < x) st[i] = x, t[i] = cnt; else if(st[i] == x) t[i] = (t[i] + cnt) % mod;
    while(i > 1){
        i /= 2;
        if(st[i] < x) st[i] = x, t[i] = cnt; else if(st[i] == x) t[i] = (t[i] + cnt) % mod;
    }
}

pii get(int l,int r){
    r++;
    int ret = 0, cnt = 0;
    for(l += mx - 1, r += mx - 1; l < r; l /= 2, r /= 2){
        if(l & 1){
            if(ret < st[l]) ret = st[l], cnt = t[l];
            else if(ret == st[l]) cnt = (cnt + t[l]) % mod;
            l++;
        }
        if(r & 1){
            --r;
            if(ret < st[r]) ret = st[r], cnt = t[r];
            else if(ret == st[r]) cnt = (cnt + t[r]) % mod;
        }
    }
    return {ret, cnt};
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #define task "v"
    if(fopen(task ".inp","r")){
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }

    cin >> n;
    for(int i = 1; i <= n; i ++){
        int a, b, c, d; cin >> a >> b >> c >> d;
        open[a].pb({i, c});
        close[b + 1].pb({i, d});
        mx = max({mx, d, b});
    }

    for(int i = 1; i <= mx; i ++){
        for(auto [id, j] : close[i]) update(j, f[id], g[id]);
        close[i].clear();
        for(auto [id, j] : open[i]){
            auto kq = get(1, j - 1);
            f[id] = kq.fi + 1, g[id] = kq.se;
            if(f[id] == 1) g[id] = 1;
        }
        open[i].clear();
    }
    int ans = 0, cnt = 0;
    for(int i = 1; i <= n; i ++) if(ans < f[i]) ans = f[i], cnt = g[i]; else if(ans == f[i]) cnt = (cnt + g[i]) % mod;
    cout << ans << " " << cnt;
}

Compilation message (stderr)

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:57:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:58:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 90 / 100