제출 #1257781

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1257781		nicecoder37	Art Exhibition (JOI18_art)	C++20	100 / 100	118 ms	15928 KiB

art

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
#define fi first
#define se second
#define space " "
#define endl "\n"
#define gcd __gcd
#define mp make_pair
#define pb push_back
#define pf push_front
#define lb lower_bound
#define ub upper_bound
#define md 1000000007
#define inf 1000000000000000000
#define li 500005
#define int long long
using namespace std;
int T,Q,n,m,a[li],pre[li],mx[li];
string s,t;
vector<int> v;
pair<int,int> p[li];
int32_t main(){
	scanf("%lld",&n);
	for(int i=1;i<=n;i++) scanf("%lld %lld",&p[i].fi,&p[i].se);
	sort(p+1,p+n+1);
	for(int i=1;i<=n;i++) pre[i]=pre[i-1]+p[i].se;
	//~ for(int i=1;i<=n;i++) printf("%d ",pre[i]);
	//~ printf("\n");
	mx[n+1]=-inf;
	for(int i=n;i>=1;i--){
		mx[i]=max(mx[i+1],pre[i]-p[i].fi);
	}
	//~ for(int i=1;i<=n;i++) printf("%d ",mx[i]);
	//~ printf("\n");
	int cev=0;
	for(int i=1;i<=n;i++){
		//~ if(mx[i]-pre[i-1]+p[i].fi==14){printf("Debuggi %d\n",i);}
		cev=max(cev,mx[i]-pre[i-1]+p[i].fi);
	}
	printf("%lld\n",cev);
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int32_t main()':
art.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         scanf("%lld",&n);
      |         ~~~~~^~~~~~~~~~~
art.cpp:26:36: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         for(int i=1;i<=n;i++) scanf("%lld %lld",&p[i].fi,&p[i].se);
      |                               ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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