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Submission #43007

# Submission time Handle Problem Language Result Execution time Memory
43007 2018-03-08T04:15:24 Z RayaBurong25_1 Sure Bet (CEOI17_sure) C++14
100 / 100
 116 ms 2260 KB 
#include <stdio.h>
#include <math.h>
#include <algorithm>
long long All[100005], Bll[100005];
int greater(long long a, long long b)
{
    return (a > b);
}
int min(int a, int b)
{
    return (a < b)?a:b;
}
int max(int a, int b)
{
    return (a > b)?a:b;
}
long long min(long long a, long long b)
{
    return (a < b)?a:b;
}
long long max(long long a, long long b)
{
    return (a > b)?a:b;
}
int main()
{
    int N;
    scanf("%d", &N);
    int i;
    double A, B;
    for (i = 0; i < N; i++)
    {
        scanf("%lf %lf", &A, &B);
        All[i] = llround(A*10000.0);
        Bll[i] = llround(B*10000.0);
        // printf("%lld %lld\n", All[i], Bll[i]);
    }
    std::sort(All, All + N, greater);
    std::sort(Bll, Bll + N, greater);
    for (i = 1; i < N; i++)
    {
        // printf("%lld %lld ", All[i], Bll[i]);
        All[i] += All[i - 1];
        Bll[i] += Bll[i - 1];
        // printf("(%lld %lld)\n", All[i], Bll[i]);
    }
    long long Ans = 0;
    int mn, md, mx;
    for (i = 2; i <= 2*N; i++)
    {
        mn = max(i - N - 1, 0);
        mx = min(i - 2, N - 1);
        // printf("%d %d\n", mn, mx);
        while (mn != mx)
        {
            if (mx - mn == 1)
                break;
            md = (mn + mx)/2;
            if (All[md] > Bll[i - 2 - md])
                mx = md;
            else
                mn = md;
        }
        Ans = max(Ans, min(All[mx], Bll[i - 2 - mx]) - 10000LL*i);
        Ans = max(Ans, min(All[mn], Bll[i - 2 - mn]) - 10000LL*i);
        // printf("%lld\n", Ans);
    }
    printf("%lld.%04lld", Ans/10000LL, Ans%10000LL);
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:28:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
sure.cpp:33:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lf %lf", &A, &B);
                                 ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 404 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 2 ms 532 KB Output is correct
6 Correct 1 ms 532 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 404 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 2 ms 532 KB Output is correct
6 Correct 1 ms 532 KB Output is correct
7 Correct 2 ms 532 KB Output is correct
8 Correct 1 ms 532 KB Output is correct
9 Correct 2 ms 532 KB Output is correct
10 Correct 1 ms 532 KB Output is correct
11 Correct 1 ms 532 KB Output is correct
12 Correct 2 ms 532 KB Output is correct
13 Correct 2 ms 532 KB Output is correct
14 Correct 2 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 2 ms 620 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 404 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 2 ms 532 KB Output is correct
6 Correct 1 ms 532 KB Output is correct
7 Correct 2 ms 532 KB Output is correct
8 Correct 1 ms 532 KB Output is correct
9 Correct 2 ms 532 KB Output is correct
10 Correct 1 ms 532 KB Output is correct
11 Correct 1 ms 532 KB Output is correct
12 Correct 2 ms 532 KB Output is correct
13 Correct 2 ms 532 KB Output is correct
14 Correct 2 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 2 ms 620 KB Output is correct
17 Correct 86 ms 2260 KB Output is correct
18 Correct 90 ms 2260 KB Output is correct
19 Correct 87 ms 2260 KB Output is correct
20 Correct 91 ms 2260 KB Output is correct
21 Correct 89 ms 2260 KB Output is correct
22 Correct 91 ms 2260 KB Output is correct
23 Correct 104 ms 2260 KB Output is correct
24 Correct 89 ms 2260 KB Output is correct
25 Correct 99 ms 2260 KB Output is correct
26 Correct 116 ms 2260 KB Output is correct