oj.uz

Submission #997998

# Submission time Handle Problem Language Result Execution time Memory
997998 2024-06-13T07:37:47 Z anHiep Examination (JOI19_examination) C++14
100 / 100
 1055 ms 77980 KB 
//     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     //
//         Nhan qua khong no chung ta thu gi          //
//                 Vay nen dung oan han               //
//     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     //
//                                                    //    
//                       _oo0oo_                      //
//                      o8888888o                     //
//                      88" . "88                     //					  
//                      (| -_- |)                     //
//                      0\  =  /0                     //
//                    ___/`---'\___                   //
//                  .' \\|     |// '.                 //
//                 / \\|||  :  |||// \                //  			  
//                / _||||| -:- |||||- \               // 			  
//               |   | \\\  -  /// |   |              //			  
//               | \_|  ''\---/''  |_/ |              //			  
//               \  .-\__  '-'  ___/-. /              //			  
//             ___'. .'  /--.--\  `. .'___            //			  
//          ."" '<  `.___\_<|>_/___.' >' "".          //  		  
//         | | :  `- \`.;`\ _ /`;.`/ - ` : | |        //		  
//         \  \ `_.   \_ __\ /__ _/   .-` /  /        //    	  
//     =====`-.____`.___ \_____/___.-`___.-'=====     //     
//                       `=---='                      //
//                                                    //
//     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     //
//   Duc Phat noi day phu ho Code con chay khong Bug  //
//                 Nam mo a di da phat                //
//     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     //

#include<bits/stdc++.h>
#ifdef LOCAL
#include "D:\debug.h"
#else
#define cebug(...) "Orz_chUoNgnn"
#endif

using namespace std;

#define fi first 
#define se second
#define pb push_back
#define ll long long
#define ii pair<int, int>
#define vll vector<ll>
#define vii vector<ii>
#define cd complex<double>
const ll mod = 1e9 + 7;
const ll INF = 1e18L + 5;
const double PI = acos(-1);
const int block = 320;
const int N = 1e6;
int tc, tt = 1;

struct student {
	ll a, b, c;
	ll in, q;
} a[N + 5];
#define vi vector<student> 
int n, q;
vector<int> f;
map<int, int> pos;
ll ans[N + 5];
struct fenwick_tree {
	ll ft[N + 5];
	void update(int pos, int val) {
		int idx = pos;
		while(idx <= N) {
			ft[idx] += val;
			idx += (idx & (-idx));
		}
	}
	ll get(int pos) {
		int idx = pos;
		ll ans = 0;
		while(idx > 0) {
			ans += ft[idx];
			idx -= (idx & (-idx));
		}
		return ans;
	}
} ft;
vi cdq(int l, int r) {
	vi f;
	vector<int> record;
	if(l == r) {
		f.pb(a[l]);
		return f;
	}
	int mid = (l + r)/2;
	vi a = cdq(l, mid);
	vi b = cdq(mid + 1, r);
	int i = 0, j = 0, cnt = 0;
	while(i < (int)a.size() && j < (int)b.size()) {
		if(a[i].b > b[j].b) {
			f.pb(a[i]);
			if(a[i].in) {
				cnt++;
				ft.update(pos[a[i].c], 1);
				record.pb(pos[a[i].c]);
			}
			i++;
		}
		else {
			if(!b[j].in) 
				ans[b[j].q] += cnt - ft.get(pos[b[j].c]);
			f.pb(b[j]);
			j++;
		}
	}
	while(i < (int)a.size()) {f.pb(a[i]); i++;}
	while(j < (int)b.size()) {
		if(!b[j].in)
			ans[b[j].q] += cnt - ft.get(pos[b[j].c]);
		f.pb(b[j]); 
		j++;
	}
	for(auto x: record) ft.update(x, -1);
	return f;
}
void solve() {
	cin>>n>>q;
	for(int i=1; i<=n + q; i++) {
		a[i].a = a[i].b = a[i].c = a[i].in = 0;
	}
	for(int i=1; i<=n; i++) {
		cin>>a[i].a>>a[i].b;
		a[i].c = a[i].a + a[i].b;
		a[i].in = 1;
	}
	for(int i=n + 1; i<=n + q; i++) {
		cin>>a[i].a>>a[i].b>>a[i].c;
		a[i].a--;
		a[i].b--;
		a[i].c--;
		a[i].q = i - n;
	}
	n += q;
	for(int i=1; i<=n; i++) {
		f.pb(a[i].a);
		f.pb(a[i].b);
		f.pb(a[i].c);
	}
	sort(f.begin(), f.end());
	f.erase(unique(f.begin(), f.end()), f.end());
	for(int i=0; i<(int)f.size(); i++) pos[f[i]] = i + 1;
	sort(a + 1, a + 1 + n, [](student x, student y){
		if(x.a != y.a) return x.a > y.a;
		if(x.b != y.b) return x.b < y.b;
		return x.c < y.c;
	}); 
	cdq(1, n);
	for(int i=1; i<=q; i++)
		cout<<ans[i]<<'\n';
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    // freopen(".INP", "r", stdin);
    // freopen(".OUT", "w", stdout);
    for(int tc=1; tc<=tt; tc++) solve();
    cerr<<"\nTime elapsed: "<<1000.0*clock()/CLOCKS_PER_SEC<<" ms.\n";
    return 0;
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 14 ms 10340 KB Output is correct
8 Correct 14 ms 10436 KB Output is correct
9 Correct 14 ms 10344 KB Output is correct
10 Correct 12 ms 9964 KB Output is correct
11 Correct 13 ms 9984 KB Output is correct
12 Correct 5 ms 9464 KB Output is correct
13 Correct 11 ms 10180 KB Output is correct
14 Correct 12 ms 10252 KB Output is correct
15 Correct 11 ms 10272 KB Output is correct
16 Correct 6 ms 9724 KB Output is correct
17 Correct 9 ms 9816 KB Output is correct
18 Correct 4 ms 9464 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 468 ms 52128 KB Output is correct
2 Correct 453 ms 52284 KB Output is correct
3 Correct 458 ms 52992 KB Output is correct
4 Correct 323 ms 54084 KB Output is correct
5 Correct 217 ms 50208 KB Output is correct
6 Correct 138 ms 46764 KB Output is correct
7 Correct 465 ms 54984 KB Output is correct
8 Correct 468 ms 51240 KB Output is correct
9 Correct 450 ms 54092 KB Output is correct
10 Correct 175 ms 46308 KB Output is correct
11 Correct 273 ms 46200 KB Output is correct
12 Correct 109 ms 44152 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 468 ms 52128 KB Output is correct
2 Correct 453 ms 52284 KB Output is correct
3 Correct 458 ms 52992 KB Output is correct
4 Correct 323 ms 54084 KB Output is correct
5 Correct 217 ms 50208 KB Output is correct
6 Correct 138 ms 46764 KB Output is correct
7 Correct 465 ms 54984 KB Output is correct
8 Correct 468 ms 51240 KB Output is correct
9 Correct 450 ms 54092 KB Output is correct
10 Correct 175 ms 46308 KB Output is correct
11 Correct 273 ms 46200 KB Output is correct
12 Correct 109 ms 44152 KB Output is correct
13 Correct 694 ms 53348 KB Output is correct
14 Correct 671 ms 53292 KB Output is correct
15 Correct 529 ms 53536 KB Output is correct
16 Correct 542 ms 51984 KB Output is correct
17 Correct 430 ms 53864 KB Output is correct
18 Correct 150 ms 47656 KB Output is correct
19 Correct 761 ms 54784 KB Output is correct
20 Correct 696 ms 54840 KB Output is correct
21 Correct 717 ms 54692 KB Output is correct
22 Correct 190 ms 43912 KB Output is correct
23 Correct 287 ms 46960 KB Output is correct
24 Correct 116 ms 41632 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 14 ms 10340 KB Output is correct
8 Correct 14 ms 10436 KB Output is correct
9 Correct 14 ms 10344 KB Output is correct
10 Correct 12 ms 9964 KB Output is correct
11 Correct 13 ms 9984 KB Output is correct
12 Correct 5 ms 9464 KB Output is correct
13 Correct 11 ms 10180 KB Output is correct
14 Correct 12 ms 10252 KB Output is correct
15 Correct 11 ms 10272 KB Output is correct
16 Correct 6 ms 9724 KB Output is correct
17 Correct 9 ms 9816 KB Output is correct
18 Correct 4 ms 9464 KB Output is correct
19 Correct 468 ms 52128 KB Output is correct
20 Correct 453 ms 52284 KB Output is correct
21 Correct 458 ms 52992 KB Output is correct
22 Correct 323 ms 54084 KB Output is correct
23 Correct 217 ms 50208 KB Output is correct
24 Correct 138 ms 46764 KB Output is correct
25 Correct 465 ms 54984 KB Output is correct
26 Correct 468 ms 51240 KB Output is correct
27 Correct 450 ms 54092 KB Output is correct
28 Correct 175 ms 46308 KB Output is correct
29 Correct 273 ms 46200 KB Output is correct
30 Correct 109 ms 44152 KB Output is correct
31 Correct 694 ms 53348 KB Output is correct
32 Correct 671 ms 53292 KB Output is correct
33 Correct 529 ms 53536 KB Output is correct
34 Correct 542 ms 51984 KB Output is correct
35 Correct 430 ms 53864 KB Output is correct
36 Correct 150 ms 47656 KB Output is correct
37 Correct 761 ms 54784 KB Output is correct
38 Correct 696 ms 54840 KB Output is correct
39 Correct 717 ms 54692 KB Output is correct
40 Correct 190 ms 43912 KB Output is correct
41 Correct 287 ms 46960 KB Output is correct
42 Correct 116 ms 41632 KB Output is correct
43 Correct 1041 ms 75444 KB Output is correct
44 Correct 1055 ms 76652 KB Output is correct
45 Correct 981 ms 77980 KB Output is correct
46 Correct 731 ms 65288 KB Output is correct
47 Correct 549 ms 67756 KB Output is correct
48 Correct 149 ms 46512 KB Output is correct
49 Correct 920 ms 76516 KB Output is correct
50 Correct 913 ms 76348 KB Output is correct
51 Correct 896 ms 76352 KB Output is correct
52 Correct 451 ms 53424 KB Output is correct
53 Correct 347 ms 51636 KB Output is correct