Submission #875765

#	Time	Username	Problem	Language	Result	Execution time	Memory
875765		Isam	Art Exhibition (JOI18_art)	C++17	50 / 100	1069 ms	10028 KiB

art

#include<bits/stdc++.h>

#define SPEED ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define int long long
#define a first
#define b second
#define pii pair<int, int>
using namespace std;

const int sz = 2e5 + 5;

const int inf = 1e15 + 7;

int n, ans;

pii c[sz];

int pref[sz];

int comp(int mna, int mxa, int s){
    return s - (mxa - mna);
}

signed main(){
    SPEED;
    cin >> n;
    for(register int i = 1; i <= n; ++i){
        cin >> c[i].a >> c[i].b;
        c[i].b *= (-1);
    }
    sort(c+1, c+n+1);
    for(register int i = 1; i <= n; ++i) pref[i] = pref[i-1] - c[i].b;
    for(register int i = 1; i < n; ++i){
        for(register int j = i; j <= n; ++j){
            int tmp = comp(c[i].a, c[j].a, pref[j] - pref[i-1]);
            ans = max(ans, tmp);
        }
    }
    cout << ans << '\n';
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:27:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   27 |     for(register int i = 1; i <= n; ++i){
      |                      ^
art.cpp:32:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   32 |     for(register int i = 1; i <= n; ++i) pref[i] = pref[i-1] - c[i].b;
      |                      ^
art.cpp:33:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   33 |     for(register int i = 1; i < n; ++i){
      |                      ^
art.cpp:34:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   34 |         for(register int j = i; j <= n; ++j){
      |                          ^

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