Submission #82863

#	Time	Username	Problem	Language	Result	Execution time	Memory
82863		chunghan	Art Exhibition (JOI18_art)	C++17	100 / 100	311 ms	233700 KiB

art

#include<iostream>
#include<memory.h>
#include<utility>
#include<algorithm>
#include<vector>

using namespace std;

typedef long long int lld;

lld n, s[500001] = {0, }, d[500001] = {0, }, a, b, tmp;
vector<pair<lld, lld>> art;

int main() {
    ios::sync_with_stdio(0); 
    cin.tie(0);
    cin >> n;
    art.push_back(pair<lld, lld>(0, 0));
    for(int i = 0; i < n; i++) {
        cin >> a >> b;
        art.push_back(pair<lld, lld>(a, b));
    }
    d[0] = -9223372036854775808;
    sort(art.begin(), art.end());
    for(int i = 1; i <= n; i++) {
        s[i] = s[i-1] + get<1>(art[i]);
        d[i] = max(d[i-1], -s[i-1] + get<0>(art[i]));
    }
    lld tmp = 0;
    for(int i = 1; i <= n; i++) {
        tmp = max(tmp, s[i] - get<0>(art[i]) + d[i]);
    }
    cout << tmp;
    return 0;
}

Compilation message (stderr)

art.cpp:23:13: warning: integer constant is so large that it is unsigned
     d[0] = -9223372036854775808;
             ^~~~~~~~~~~~~~~~~~~

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