Submission #742531

#	Time	Username	Problem	Language	Result	Execution time	Memory
742531		Cookie	Art Exhibition (JOI18_art)	C++14	100 / 100	212 ms	24656 KiB

art

#include<bits/stdc++.h>
#include<fstream>
using namespace std;
ifstream fin("VNOICUP.INP");
ofstream fout("VNOICUP.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ld PI = 3.14159265359;
const int x[4] = {1, -1, 0, 0};
const int y[4] = {0, 0, 1, -1};
const ll mod = 1e9 + 7;
const int mxn = 5e5 + 5, mxm = 1e5, sq = 400;
const int base = (1 << 18);
const ll inf = 1e9;
int n;
ll p[mxn + 1];
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    vt<pll>v(n);
    forr(i, 0, n){
        cin >> v[i].fi >> v[i].se;
    }
    sort(v.begin(), v.end());
    p[0] = 0;
    for(int i = 0; i < v.size(); i++){
        p[i + 1] = p[i] + v[i].se;
    }
    ll ans = -1e18, mx = -1e18;
    for(int i = 0; i < v.size(); i++){
        mx = max(mx, v[i].fi + -p[i]);
        ans = max(ans, p[i + 1] + mx - v[i].fi);
    }
    cout << ans;
    return(0);
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:36:22: 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]
   36 |     for(int i = 0; i < v.size(); i++){
      |                    ~~^~~~~~~~~~
art.cpp:40:22: 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]
   40 |     for(int i = 0; i < v.size(); i++){
      |                    ~~^~~~~~~~~~

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