oj.uz

Submission #152236

# Submission time Handle Problem Language Result Execution time Memory
152236 2019-09-06T23:31:48 Z 12tqian Art Exhibition (JOI18_art) C++14
100 / 100
 291 ms 44652 KB 
#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
 
using namespace std;
using namespace __gnu_pbds;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
 
const double PI = 4 * atan(1);
 
#define sz(x) (int)(x).size()
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define vi vector<int>
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define vpi vector<pair<int, int>>
#define vpd vector<pair<double, double>>
#define pd pair<double, double>
 
#define f0r(i,a) for(int i=0;i<a;i++)
#define f1r(i,a,b) for(int i=a;i<b;i++)
#define trav(a, x) for (auto& a : x)
 
template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
  cout << "["; for(int i = 0; i < v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";
}
 
void fast_io(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
}
void io(string taskname){
    string fin = taskname + ".in";
    string fout = taskname + ".out";
    const char* FIN = fin.c_str();
    const char* FOUT = fout.c_str();
    freopen(FIN, "r", stdin);
    freopen(FOUT, "w", stdout);
    fast_io();
}
const int MAX = 5e5 + 5;
const ll INF = 1e18;
ll pre[MAX];
vector<pair<ll, ll>> p;
ll mx [MAX];
ll mn[MAX];
int main(){
  fast_io();
	int n;
	ll ans = -INF;
	cin >> n;
	f0r(i, n){
		ll ai, bi;
		cin >> ai >> bi;
		ans = max(ans, bi);
		p.eb(mp(ai, bi));
	}
	sort(all(p));
	f0r(i, n){
		if(i == 0) pre[i] = p[i].s;
		else pre[i] = pre[i-1] + p[i].s;
	}
	vector<ll> v1;
	f0r(i, n){
		v1.eb(pre[i] - p[i].f);
	}
	vector<ll> v2;
	f0r(i, n){
		if(i == 0) v2.eb(-p[i].f);
		else v2.eb(pre[i-1] - p[i].f);
	}
	f0r(i,n){
		if(i == 0) mn[i] = v2[i];
		else mn[i] = min(mn[i+1], v2[i]);
	}
//	cout << v1 << " " << v2 << endl;
	for(int i = n-1; i>= 0; i--){
		if(i == n-1) mx[i] = v1[i];
		else mx[i] = max(mx[i+1], v1[i]);
	}
//	ll ans = 0;
	f0r(i, n-1){
		ans = max(ans, mx[i+1] - mn[i]);
	}
	cout << ans << endl;
	return 0;
}

Compilation message

art.cpp:1:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/stack:200000000")
 
art.cpp: In function 'void io(std::__cxx11::string)':
art.cpp:52:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen(FIN, "r", stdin);
     ~~~~~~~^~~~~~~~~~~~~~~~~
art.cpp:53:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen(FOUT, "w", stdout);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 296 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 296 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 296 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 5 ms 760 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 5 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 KB Output is correct
32 Correct 5 ms 760 KB Output is correct
33 Correct 5 ms 760 KB Output is correct
34 Correct 5 ms 760 KB Output is correct
35 Correct 5 ms 760 KB Output is correct
36 Correct 5 ms 760 KB Output is correct
37 Correct 5 ms 760 KB Output is correct
38 Correct 5 ms 760 KB Output is correct
39 Correct 5 ms 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 5 ms 760 KB Output is correct
43 Correct 5 ms 760 KB Output is correct
44 Correct 5 ms 760 KB Output is correct
45 Correct 5 ms 760 KB Output is correct
46 Correct 5 ms 760 KB Output is correct
47 Correct 5 ms 764 KB Output is correct
48 Correct 5 ms 760 KB Output is correct
49 Correct 4 ms 760 KB Output is correct
50 Correct 5 ms 760 KB Output is correct
51 Correct 5 ms 760 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 296 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 5 ms 760 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 5 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 KB Output is correct
32 Correct 5 ms 760 KB Output is correct
33 Correct 5 ms 760 KB Output is correct
34 Correct 5 ms 760 KB Output is correct
35 Correct 5 ms 760 KB Output is correct
36 Correct 5 ms 760 KB Output is correct
37 Correct 5 ms 760 KB Output is correct
38 Correct 5 ms 760 KB Output is correct
39 Correct 5 ms 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 5 ms 760 KB Output is correct
43 Correct 5 ms 760 KB Output is correct
44 Correct 5 ms 760 KB Output is correct
45 Correct 5 ms 760 KB Output is correct
46 Correct 5 ms 760 KB Output is correct
47 Correct 5 ms 764 KB Output is correct
48 Correct 5 ms 760 KB Output is correct
49 Correct 4 ms 760 KB Output is correct
50 Correct 5 ms 760 KB Output is correct
51 Correct 5 ms 760 KB Output is correct
52 Correct 284 ms 31932 KB Output is correct
53 Correct 286 ms 31796 KB Output is correct
54 Correct 284 ms 44652 KB Output is correct
55 Correct 284 ms 44560 KB Output is correct
56 Correct 286 ms 44504 KB Output is correct
57 Correct 285 ms 44544 KB Output is correct
58 Correct 286 ms 44500 KB Output is correct
59 Correct 284 ms 44632 KB Output is correct
60 Correct 283 ms 44572 KB Output is correct
61 Correct 286 ms 44472 KB Output is correct
62 Correct 283 ms 44512 KB Output is correct
63 Correct 283 ms 44504 KB Output is correct
64 Correct 283 ms 44508 KB Output is correct
65 Correct 282 ms 44628 KB Output is correct
66 Correct 282 ms 44500 KB Output is correct
67 Correct 291 ms 40276 KB Output is correct
68 Correct 284 ms 40248 KB Output is correct