제출 #1072791

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1072791		phong	Naan (JOI19_naan)	C++17	29 / 100	330 ms	17500 KiB

naan

#include<bits/stdc++.h>

#define ll long long
#define int long long
const int nmax = 2e3 + 5, N = 1e5;
const ll oo = 1e18 + 1, base = 311;
const int lg = 19, M = 10;
const ll mod = 998244353, mod2 = 1e9 + 5277;
#define pii pair<int, int>
#define fi first
#define se second
#define endl "\n"
#define debug(a, n) for(int i = 1; i <= n; ++i) cout << a[i] << ' '; cout << "\n";
using namespace std;

int n, L;
int a[nmax][nmax];
ll s[nmax][nmax];
struct node{
    int x, y, id;
};
ll sum[nmax];
bool vis[nmax];
bool check(pii t1, pii t2){
    return t1.fi * t2.se <= t1.se * t2.fi;
}
ll calc(int l, int r, int i){
    if(l > r) return 0;
    return s[i][r]  - s[i][l - 1];
}
pii get(pii t1, pii t2, int idx){
    if(t1.fi == 0) return t2;
    if(t2.fi == 0) return t1;
    pii tx ={t1.fi * t2.se + (t1.se * t2.fi * idx), t1.se * t2.se};
    int lc = __gcd(tx.fi, tx.se);
    return {tx.fi / lc, tx.se / lc};
}
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
//    freopen("code.inp", "r", stdin);
//    freopen("code.out", "w", stdout);
    cin >> n >> L;
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= L; ++j){
            cin >> a[i][j];
            sum[i] += a[i][j];
            s[i][j] = s[i][j - 1] + a[i][j];
        }
    }
    pii pos = {0, 0};
    vector<int> tmp;
    int last = 0;
    for(int j = 1; j <= n; ++j){
        pii ma = {-1, -1};
        int idx = -1, dcm = -1;
        for(int i = 1; i <= n; ++i){
            if(vis[i]) continue;
            int l =0, r = L, t1 = -1,t2 = -1;
            t1 = last;
            l = t1, r = L + 1;
            pii dx;
            while(l <= r){
                int mid = r + l >> 1;
                pii tx = get({t1, 1}, pos, -1);
                tx = get(tx, {calc(t1 + 1, mid, i), 1}, 1);
                if(check(tx, {sum[i], n})){
                    l = mid + 1;
                    t2 = mid;
                    dx = tx;
                }
                else r = mid - 1;
            }
//            if(j == 2) cout << i << ' ' << t1 << ' ' << t2<< endl;

//            cout << sum[i] << ' ' << n << ' ';
            pii one = get({sum[i], n}, dx, -1);
            if(a[i][t2 + 1]) one.se *= a[i][t2 + 1];
            pii two = get({t1, 1}, pos, -1);
//            if(j == 2) cout << two.fi << ' ' << two.se << endl;

            pii tx = get(one, two, 1);
            tx = get(tx, {t2 - t1, 1}, 1);


            tx = get(pos, tx, 1);
//            cout << i << ' ' << t1 << ' ' << t2 << endl;
            if(idx == -1 || check(tx, ma)){
                ma = tx;
                idx = i;
                dcm = t2 + 1;
            }

        }

        if(j < n) cout << ma.fi << ' ' << ma.se << endl;
        tmp.push_back(idx);
        vis[idx]= 1;
        pos = ma;
        last = dcm;
//        cout << dcm << ' ' ;
//        exit(0);
    }
    for(auto p : tmp) cout << p << ' ';



}
/*




*/

컴파일 시 표준 에러 (stderr) 메시지

naan.cpp:38:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   38 | main(){
      | ^~~~
naan.cpp: In function 'int main()':
naan.cpp:64:29: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   64 |                 int mid = r + l >> 1;
      |                           ~~^~~

• Subtask 1: 5 / 5
• Subtask 2: 24 / 24
• Subtask 3: 0 / 71