Submission #127403

#	Time	Username	Problem	Language	Result	Execution time	Memory
127403		FutymyClone	Art Exhibition (JOI18_art)	C++14	100 / 100	270 ms	18364 KiB

art

#include <bits/stdc++.h>

using namespace std;

const int N = 5e5 + 5;

int n;
pair <long long, long long> a[N];
long long ans = -1e18, res = -1e18;

int main(){
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) scanf("%lld %lld", &a[i].first, &a[i].second);
    sort(a + 1, a + n + 1);
    for (int i = 1; i <= n; i++) a[i].second += a[i - 1].second;
    for (int i = 1; i <= n; i++) {
        res = max(res, a[i].first - a[i - 1].second);
        ans = max(ans, a[i].second - a[i].first + res);
    }

    printf("%lld", ans);
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
art.cpp:13:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i = 1; i <= n; i++) scanf("%lld %lld", &a[i].first, &a[i].second);
                                  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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