oj.uz

Submission #616919

# Submission time Handle Problem Language Result Execution time Memory
616919 2022-08-01T07:41:17 Z nghiass001 Sure Bet (CEOI17_sure) C++17
100 / 100
 101 ms 5172 KB 
#include <bits/stdc++.h>
#define FOR(i, l, r) for(int i=(l); i<=(r); ++i)
#define REP(i, l, r) for(int i=(l); i<(r); ++i)
#define FORD(i, r, l) for(int i=(r); i>=(l); --i)
#define REPD(i, r, l)  for(int i=(r)-1; i>=(l); --i)
using namespace std;
const int N = 1e5 + 5;
int n;
long double a[N], b[N];

void Enter() {
    cin >> n;
    FOR(i, 1, n) cin >> a[i] >> b[i];
}

void Process() {
    sort(a + 1, a + n + 1, greater<long double>());
    sort(b + 1, b + n + 1, greater<long double>());

    long double res = 0, sumL = 0, sumR = 0;
    for(int i = 1, j = 1; i <= n || j <= n; ) {
        if (j > n || i <= n && sumL < sumR) sumL += a[i++];
            else sumR += b[j++];
        res = max(res, min(sumL, sumR) - (i + j - 2));
    }
    cout << setprecision(4) << fixed << res;
}

int main()
{
    #define file "sure"
    if (fopen(file".inp", "r")) {
        freopen(file".inp", "r", stdin);
        freopen(file".out", "w", stdout);
    }
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    Enter();
    Process();
}

Compilation message

sure.cpp: In function 'void Process()':
sure.cpp:22:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   22 |         if (j > n || i <= n && sumL < sumR) sumL += a[i++];
      |                      ~~~~~~~^~~~~~~~~~~~~~
sure.cpp: In function 'int main()':
sure.cpp:33:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |         freopen(file".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sure.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen(file".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 85 ms 4772 KB Output is correct
18 Correct 87 ms 4824 KB Output is correct
19 Correct 85 ms 4812 KB Output is correct
20 Correct 98 ms 4812 KB Output is correct
21 Correct 89 ms 5172 KB Output is correct
22 Correct 78 ms 4688 KB Output is correct
23 Correct 101 ms 4768 KB Output is correct
24 Correct 82 ms 4748 KB Output is correct
25 Correct 84 ms 4820 KB Output is correct
26 Correct 90 ms 5116 KB Output is correct