Submission #1071360

#	Time	Username	Problem	Language	Result	Execution time	Memory
1071360		vjudge1	Art Exhibition (JOI18_art)	C++17	50 / 100	1096 ms	24004 KiB

art

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define pb push_back
#define sz size
#define mp make_pair
#define ios ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define fre(s) freopen(s".in", "r", stdin);freopen(s".out", "w", stdout);
#define s second
#define f first
#define ii pair<ll,ll>
const ll mod=1e9+7;
const int N=2e5+6;
const ll inf=1e12+5;      
ll n,m,k,d[N],g[N];
int main() 
{
    ios
    cin>>n;
    ii v[n];
    for(int i=0;i<n;++i) 
    {
        cin>>v[i].f>>v[i].s;
    }
    sort(v,v+n);
    vector<ii> a;
    k=0;
    for(int i=0;i<n;++i) 
    {
        if (i>0 && v[i].f==v[i-1].f) 
        {
            k+=v[i].s;
        } 
        else 
        {
            if(i>0) 
            {
                a.pb(mp(v[i-1].f,k));
            }
            k=v[i].s;
        }
    }
    a.pb(mp(v[n-1].f,k));
    vector<ll> sum;
    ll l=0,r;
    for(int i=0;i<a.sz();++i) 
    {
        l+=a[i].s;
        sum.pb(l);
    }
    m=0;
    for (int i=0;i<a.sz();++i) 
    {
        r=0;
        for (int j=i;j<a.sz();++j) 
        {
            if (i-1<0)k=sum[j];
            else k=sum[j]-sum[i-1];
            //cout<<k;
            r=k-(a[j].f-a[i].f);
            m=max(m,r);
        }
    }
    cout<<m;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:49:18: 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]
   49 |     for(int i=0;i<a.sz();++i)
      |                 ~^~~~~~~
art.cpp:55:19: 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]
   55 |     for (int i=0;i<a.sz();++i)
      |                  ~^~~~~~~
art.cpp:58:23: 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]
   58 |         for (int j=i;j<a.sz();++j)
      |                      ~^~~~~~~

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