Submission #1050432

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050432		vjudge1	Art Exhibition (JOI18_art)	C++98	0 / 100	0 ms	348 KiB

art

#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;

int main() {
    long long n;
    cin >> n;
    pair<long long, long long> q[n];
    for (int i = 0; i < n; i++) {
        cin >> q[i].f >> q[i].s;
    }
    sort(q, q + n);

    vector<pair<long long, long long>> a;
    long long s = 0;
    for (int i = 0; i < n; i++) {
        if (i > 0 && q[i].f == q[i - 1].f) {
            s += q[i].s;
        } else {
            if (i > 0) {
                a.push_back(make_pair(q[i - 1].f, s));
            }
            s = q[i].s;
        }
    }
    a.push_back(make_pair(q[n - 1].f, s));
    
    long long m = LLONG_MIN;
    long long sum = 0;
    long long prefix_sum = 0;

    for (int i = 0; i < a.size(); i++) {
        prefix_sum += a[i].s;
        sum = prefix_sum - (a[i].f - a[0].f);
        m = max(m, sum);
    }

    cout << m << endl;
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for (int i = 0; i < a.size(); i++) {
      |                     ~~^~~~~~~~~~

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