Submission #252621

#	Time	Username	Problem	Language	Result	Execution time	Memory
252621		ChrisT	Art Exhibition (JOI18_art)	C++17	100 / 100	288 ms	21112 KiB

art

#include<bits/stdc++.h>
using namespace std;
int main () {
	int n;
	scanf ("%d",&n);
	vector<pair<long long, long long>> v(n+1);
	for (int i = 1; i <= n; i++) scanf ("%lld %lld",&v[i].first,&v[i].second);
	sort(v.begin()+1,v.end());
	long long mx = -1e18, ret = -1e18;
	for (int i = 1; i <= n; i++) {
		v[i].second += v[i-1].second;
		mx = max(mx,v[i].first - v[i-1].second);
		ret = max(ret,v[i].second - v[i].first + mx);
	}
	printf ("%lld\n",ret);
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:5:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&n);
  ~~~~~~^~~~~~~~~
art.cpp:7:37: 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",&v[i].first,&v[i].second);
                               ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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