Submission #1027276

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027276		vjudge1	Sure Bet (CEOI17_sure)	C++17	60 / 100	2066 ms	3412 KiB

sure

#include <iostream>
#include <vector>
#include <algorithm>
#pragma GCC optimize("03,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

using namespace std;

int main()
{
    int n;
    scanf("%d", &n);
    vector<double> a(n), b(n);
    for(int i = 0; i < n; ++i)
        scanf("%lf %lf", &a[i], &b[i]);

    sort(a.begin(), a.end(), greater<double>());
    sort(b.begin(), b.end(), greater<double>());

    vector<double> sum_a(n + 1, 0), sum_b(n + 1, 0);

    for(int i = 0; i < n; ++i)
    {
        sum_a[i + 1] = sum_a[i] + a[i] - 1;
        sum_b[i + 1] = sum_b[i] + b[i] - 1;
    }

    double ans = -1e9;
    for(int na = 0; na <= n; ++na)
    {
        for(int nb = 0; nb <= n; ++nb)
        {
            double cur = min(sum_a[na] - nb, sum_b[nb] - na);
            ans = max(cur, ans);
        }
    }
    printf("%.4lf",(double)ans);
}

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
sure.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%lf %lf", &a[i], &b[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 0 / 40