Submission #81934

#	Time	Username	Problem	Language	Result	Execution time	Memory
81934		mra2322001	Art Exhibition (JOI18_art)	C++11	Compilation error	0 ms	0 KiB

art

#include <bits/stdc++.h>
#define f0(i, n) for(int i(0); i < (n); i++)
#define f1(i, n) for(int i(1); i <= n; i++)

using namespace std;
typedef long long ll;
const int N = 500002;

struct data{
    ll a, b;
    operator <(data x1){
        return a < x1.a;
    }
} a[N];

int n; ll f[N];

int main(){
    ios_base::sync_with_stdio(0);
    ///freopen("A.inp", "r", stdin);

    cin >> n;
    f1(i, n) cin >> a[i].a >> a[i].b;

    sort(a + 1, a + n + 1);

    ll ma = LLONG_MIN;
    f1(i, n){
        f[i] = a[i].b;
        f[i] = max(f[i], ma + a[i].b - a[i].a);
        ma = max(ma, f[i] + a[i].a);
    }
    cout << *max_element(f + 1, f + n + 1);
}

Compilation message (stderr)

art.cpp:11:23: error: ISO C++ forbids declaration of 'operator<' with no type [-fpermissive]
     operator <(data x1){
                       ^