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답안 #895865

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895865 2023-12-31T02:15:07 Z thunopro Examination (JOI19_examination) C++14
100 / 100
 284 ms 21136 KB 
#include<bits/stdc++.h>
using namespace std ; 
#define ll long long 
#define maxn 200009 
#define fi first 
#define se second 
#define pb push_back 
#define left id<<1 
#define right id<<1|1 
#define re exit(0); 
#define _lower(x) lower_bound(v.begin(),v.end(),x)-v.begin()+1  

const int mod = 1e9+7 ; 
const int INF = 1e9 ; 
const int LOG = 18 ; 

typedef vector<int> vi ; 
typedef pair<int,int> pii ; 
typedef vector<ll> vl ; 
typedef vector<pii> vii ; 
 
void add ( int &a , int b ) 
{
	a += b ;
	if ( a < 0 ) a += mod ; 
	if ( a >= mod ) a -= mod ; 
}

template < typename T > void chkmin ( T &a , T b ) { if ( a > b ) a = b ; } 
template < typename T > void chkmax ( T &a , T b ) { if ( a < b ) a = b ; } 

void rf () 
{
	freopen ("bai1.inp","r",stdin) ; 
//	freopen ("bai1.out","w",stdout) ; 
}

int _pow ( int a , int n ) 
{
	if ( n == 0 ) return 1 ; 
	int res = _pow (a,n/2) ; 
	if ( n % 2 ) return 1ll*res*res%mod*a%mod ; 
	else return 1ll*res*res%mod ; 
}

int n , nq ; 

struct score {
	int math , info , sum , id ; 
} a [maxn] , q [maxn] , b [maxn] ; 
int res [maxn] ; 
bool cmp_math ( score u , score v ) 
{
	if (u.math == v.math) 
	{
		return u.id < v.id ; 
	}
	return u.math >= v.math ; 
}
bool cmp_info ( score u , score v ) 
{
	if ( u.info == v.info ) 
	{
		return u.id < v.id ; 
	}
	return u.info >= v.info ; 
}

int num ; 

int bit [maxn] ; 
void update ( int x , int y ) 
{
	while ( x ) bit [x] += y , x -= (x&-x) ; 
}
int get ( int x ) 
{
	int res = 0 ; 
	while ( x < maxn ) res += bit [x] , x += (x&-x) ; 
	return res ; 
}

void dnc ( int l , int r ) 
{
	if ( l == r ) return ; 
	int mid = (l+r)/2 ; 
	dnc (l,mid) ; 
	dnc (mid+1,r) ; 
	
	vector<score> impor ; 
	
	for ( int i = l ; i <= mid ; i ++ ) if ( b [i].id == - 1 ) impor.pb (b[i]) ; 
	for ( int i = mid + 1 ; i <= r ; i ++ ) if ( b[i].id != - 1 ) impor.pb (b[i]) ; 
	
	sort (impor.begin(),impor.end(),cmp_info) ; 
	
	for ( auto x : impor ) 
	{
		int info = x.info , sum = x.sum , id = x.id ;
		if ( id == - 1 ) update (sum,1) ; 
		else res [id] += get (sum) ; 
	}
	for ( auto x : impor ) if ( x.id == - 1 ) update (x.sum,-1) ; 
}

void mapping () 
{
	vi v ; 
	for ( int i = 1 ; i <= n ; i ++ ) v . pb (a[i].sum) ; 
	for ( int i = 1 ; i <= nq ; i ++ ) v . pb (q[i].sum) ; 
	sort (v.begin(),v.end()) ; 
	v.resize(unique(v.begin(),v.end())-v.begin()) ; 
	for ( int i = 1 ; i <= n ; i ++ ) a [i].sum = _lower(a[i].sum) ; 
	for ( int i = 1 ; i <= nq ; i ++ ) q [i].sum = _lower(q[i].sum) ; 
	
}
int main () 
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);cout.tie(0) ; 
//	rf () ; 
	cin >> n >> nq ; 
	for ( int i = 1 ; i <= n ; i ++ ) 
	{
		cin >> a [i].math >> a [i].info ; a [i].sum = a [i].math + a [i].info ; 
	}
	
	for ( int i = 1 ; i <= nq ; i ++ ) 
	{
		cin >> q [i].math >> q [i].info >> q [i].sum ; 
	}
	
	mapping () ; 
	
	int num = 0 ;
	for ( int i = 1 ; i <= n ; i ++ ) a [i].id = - 1 , b [++num] = a [i] ; 
	for ( int i = 1 ; i <= nq ; i ++ ) q [i].id = i , b [++num] = q [i] ; 
	
	sort (b+1,b+num+1,cmp_math) ; 
	dnc (1,num) ; 
	
	for ( int i = 1 ; i <= nq ; i ++ ) cout << res [i] << "\n" ; 
}

// range , error , check speical , ... 
// find key , find key 
//'-std=c++11' stay hard 
// there is no tomorrow

Compilation message

examination.cpp: In function 'void dnc(int, int)':
examination.cpp:99:7: warning: unused variable 'info' [-Wunused-variable]
   99 |   int info = x.info , sum = x.sum , id = x.id ;
      |       ^~~~
examination.cpp: In function 'void rf()':
examination.cpp:34:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6608 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 7 ms 6748 KB Output is correct
8 Correct 7 ms 6748 KB Output is correct
9 Correct 7 ms 6748 KB Output is correct
10 Correct 6 ms 6748 KB Output is correct
11 Correct 6 ms 6748 KB Output is correct
12 Correct 5 ms 6628 KB Output is correct
13 Correct 6 ms 6744 KB Output is correct
14 Correct 6 ms 6812 KB Output is correct
15 Correct 6 ms 6748 KB Output is correct
16 Correct 6 ms 6748 KB Output is correct
17 Correct 6 ms 6748 KB Output is correct
18 Correct 4 ms 6748 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 239 ms 16256 KB Output is correct
2 Correct 236 ms 16440 KB Output is correct
3 Correct 240 ms 16272 KB Output is correct
4 Correct 224 ms 15508 KB Output is correct
5 Correct 208 ms 15624 KB Output is correct
6 Correct 177 ms 14704 KB Output is correct
7 Correct 231 ms 18160 KB Output is correct
8 Correct 232 ms 16348 KB Output is correct
9 Correct 228 ms 18668 KB Output is correct
10 Correct 199 ms 16196 KB Output is correct
11 Correct 206 ms 15848 KB Output is correct
12 Correct 129 ms 14760 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 239 ms 16256 KB Output is correct
2 Correct 236 ms 16440 KB Output is correct
3 Correct 240 ms 16272 KB Output is correct
4 Correct 224 ms 15508 KB Output is correct
5 Correct 208 ms 15624 KB Output is correct
6 Correct 177 ms 14704 KB Output is correct
7 Correct 231 ms 18160 KB Output is correct
8 Correct 232 ms 16348 KB Output is correct
9 Correct 228 ms 18668 KB Output is correct
10 Correct 199 ms 16196 KB Output is correct
11 Correct 206 ms 15848 KB Output is correct
12 Correct 129 ms 14760 KB Output is correct
13 Correct 260 ms 16800 KB Output is correct
14 Correct 260 ms 16876 KB Output is correct
15 Correct 236 ms 16264 KB Output is correct
16 Correct 245 ms 16012 KB Output is correct
17 Correct 230 ms 16016 KB Output is correct
18 Correct 176 ms 14732 KB Output is correct
19 Correct 261 ms 16860 KB Output is correct
20 Correct 258 ms 16768 KB Output is correct
21 Correct 260 ms 21136 KB Output is correct
22 Correct 198 ms 16184 KB Output is correct
23 Correct 201 ms 15700 KB Output is correct
24 Correct 141 ms 14748 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6608 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 7 ms 6748 KB Output is correct
8 Correct 7 ms 6748 KB Output is correct
9 Correct 7 ms 6748 KB Output is correct
10 Correct 6 ms 6748 KB Output is correct
11 Correct 6 ms 6748 KB Output is correct
12 Correct 5 ms 6628 KB Output is correct
13 Correct 6 ms 6744 KB Output is correct
14 Correct 6 ms 6812 KB Output is correct
15 Correct 6 ms 6748 KB Output is correct
16 Correct 6 ms 6748 KB Output is correct
17 Correct 6 ms 6748 KB Output is correct
18 Correct 4 ms 6748 KB Output is correct
19 Correct 239 ms 16256 KB Output is correct
20 Correct 236 ms 16440 KB Output is correct
21 Correct 240 ms 16272 KB Output is correct
22 Correct 224 ms 15508 KB Output is correct
23 Correct 208 ms 15624 KB Output is correct
24 Correct 177 ms 14704 KB Output is correct
25 Correct 231 ms 18160 KB Output is correct
26 Correct 232 ms 16348 KB Output is correct
27 Correct 228 ms 18668 KB Output is correct
28 Correct 199 ms 16196 KB Output is correct
29 Correct 206 ms 15848 KB Output is correct
30 Correct 129 ms 14760 KB Output is correct
31 Correct 260 ms 16800 KB Output is correct
32 Correct 260 ms 16876 KB Output is correct
33 Correct 236 ms 16264 KB Output is correct
34 Correct 245 ms 16012 KB Output is correct
35 Correct 230 ms 16016 KB Output is correct
36 Correct 176 ms 14732 KB Output is correct
37 Correct 261 ms 16860 KB Output is correct
38 Correct 258 ms 16768 KB Output is correct
39 Correct 260 ms 21136 KB Output is correct
40 Correct 198 ms 16184 KB Output is correct
41 Correct 201 ms 15700 KB Output is correct
42 Correct 141 ms 14748 KB Output is correct
43 Correct 269 ms 18828 KB Output is correct
44 Correct 284 ms 19088 KB Output is correct
45 Correct 266 ms 18544 KB Output is correct
46 Correct 270 ms 17268 KB Output is correct
47 Correct 238 ms 17032 KB Output is correct
48 Correct 182 ms 14796 KB Output is correct
49 Correct 268 ms 19872 KB Output is correct
50 Correct 259 ms 18712 KB Output is correct
51 Correct 259 ms 20968 KB Output is correct
52 Correct 228 ms 17696 KB Output is correct
53 Correct 208 ms 16276 KB Output is correct