Submission #839837

#	Time	Username	Problem	Language	Result	Execution time	Memory
839837		ipslp	Art Exhibition (JOI18_art)	C++14	0 / 100	0 ms	212 KiB

art

#include <iostream>
#include <algorithm>
using namespace std;
int n;
const int max_n = 5*1e5+5;
pair<long long, long long> v[max_n];
bool comparator( pair<long long, long long> x, pair<long long, long long> y )
{
    if( x.first == y.first )
        return x.second < y.second;
    return x.first < y.first;
}
int main()
{
    ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
    cin >> n;
    for( int i = 0; i < n; ++i )
        cin >> v[i].first >> v[i].second;
    sort( v, v+n, comparator );
    long long maxx = 0;
    unsigned long long sum = v[0].second;
    int st = 0, dr = 0;
    while( st < n && dr < n )
    {
        if( sum - (v[dr].first - v[st].first) > 0 )
        {
            if( sum - (v[dr].first - v[st].first) > maxx )
                maxx = sum - (v[dr].first - v[st].first);
            ++dr, sum += v[dr].second;
        }
        else
        {
            ++st, sum -= v[st-1].second;
        }
    }
    cout << maxx;
  	return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:27:51: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'long long int' [-Wsign-compare]
   27 |             if( sum - (v[dr].first - v[st].first) > maxx )
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50