Submission #338875

#	Time	Username	Problem	Language	Result	Execution time	Memory
338875		Kerim	Art Exhibition (JOI18_art)	C++17	100 / 100	236 ms	24940 KiB

art

#include "bits/stdc++.h"
#define MAXN 500009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
ll par[MAXN];
pair<ll,int>arr[MAXN];
int main(){
    //freopen("file.in", "r", stdin);
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    	scanf("%lld%d",&arr[i].ff,&arr[i].ss);
    sort(arr+1,arr+n+1);
    for(int i=1;i<=n;i++)
    	par[i]=par[i-1]+arr[i].ss;
    ll ans=0,mx=0;
    for(int i=1;i<=n;i++){
    	umax(mx,arr[i].ff-par[i-1]);
		umax(ans,par[i]-arr[i].ff+mx);	
    }
    printf("%lld\n",ans);
	return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
art.cpp:27:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |      scanf("%lld%d",&arr[i].ff,&arr[i].ss);
      |      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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