Submission #1082718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082718		KasymK	Art Exhibition (JOI18_art)	C++17	100 / 100	144 ms	21072 KiB

art

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second   
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
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;}
const int N = 5e5+5;

struct add{
    ll sz, val;
} v[N];

int main(){
    int n;
    scanf("%d", &n);
    for(int i = 1; i <= n; ++i){
        ll a, b;
        scanf("%lld%lld", &a, &b);
        v[i].sz = a, v[i].val = b;
    }
    auto cmp = [&](add a, add b) -> bool {
        if(a.sz != b.sz)
            return a.sz < b.sz;
        return a.val < b.val;
    };
    sort(v+1, v+n+1, cmp);
    ll wow = v[1].sz, answer = -1e18;
    for(int i = 1; i <= n; ++i){
        v[i].val += v[i-1].val;
        umax(wow, v[i].sz-v[i-1].val);
        umax(answer, v[i].val-v[i].sz+wow);
    }
    printf("%lld\n", answer);
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
art.cpp:26:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         scanf("%lld%lld", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

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