Submission #865513

#	Time	Username	Problem	Language	Result	Execution time	Memory
865513		vjudge1	Sure Bet (CEOI17_sure)	C++17	Compilation error	0 ms	0 KiB

sure

/// tree bends in youth
/// 24  .10.2023
/// success is doing same thing in every single day!!!
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(x) x.begin(), x.end()
#define F first
#define S second
using namespace std;
const ll N =2e5+ 5;
const ll NN =2e6 + 5;
const ll INF = -1e1;
const ll MOD = 1e9 + 7;
const ll LG = 18;
const ll k = 316;
int n;
long double a[N],b[N],pl[N],pr[N];
void solve(){
    cin >> n;
    for(int i = 1;i <= n;i++){
        cin >> a[i] >> b[i];
    }
    sort(a + 1,a + n + 1);
    sort(b + 1,b + n + 1);
    reverse(a + 1,a+  n + 1);
    reverse(b + 1,b + n + 1);
    for(int i = 1;i <= n;i++){
        pr[i] = pr[i - 1] + b[i];
        pl[i] = pl[i - 1] + a[i];
    }
    long double ans = 0;
    for(int i = 1;i <= n;i++){
        if(pl[i] < i)break;
        int l = 1,r = n;
        while(l < r){
            int mid = (l + r) / 2;
            if(pl[i] < long double(i + mid))r = mid - 1;
            long double sum = i + mid;
            long double res = min(pl[i] - sum,pr[mid] -sum );
            if(res < ans)r = mid;
            else l = mid + 1;
            ans=  max(ans,res);
        }
    }
    cout <<fixed << setprecision(9) <<ans;
}
main (){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
//    freopen("input.txt","r",stdin);
//    freopen("output.txt","w",stdout);
    ll abd= 1;
//    cin >> abd;
    for(ll i = 1;i <= abd;i++){
//        cout << "Case " << i << ":\n";
        solve();
    }
}

Compilation message (stderr)

sure.cpp: In function 'void solve()':
sure.cpp:38:24: error: expected primary-expression before 'long'
   38 |             if(pl[i] < long double(i + mid))r = mid - 1;
      |                        ^~~~
sure.cpp:38:23: error: expected ')' before 'long'
   38 |             if(pl[i] < long double(i + mid))r = mid - 1;
      |               ~       ^~~~~
      |                       )
sure.cpp: At global scope:
sure.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main (){
      | ^~~~