oj.uz

Submission #844597

# Submission time Handle Problem Language Result Execution time Memory
844597 2023-09-05T14:28:17 Z vjudge1 Sure Bet (CEOI17_sure) C++17
100 / 100
 92 ms 6892 KB 
///***LTT***///
/// ->TUYEN QUOC GIA<- ///
#include<bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
#define endl "\n"
#define F first
#define S second
#define pb push_back
#define CHECKBIT(mask,i) ((mask>>(i) )&1) // == 1 la bat, == 0 la tat
#define OFFBIT(mask,i) ((1<<(i))^mask) // tat bit thu i
#define ONBIT(mask,i) ((1<<(i))mask) // bat bit thu i
using namespace std;
const long long oo = 1e9+7;
const int N = 2 * 1e5 + 10;
long double a[N], b[N], ans, L, R;
int n;
bool cmp(long double a, long double b){
    return a > b;
}
void inp(){
    cin >> n;
    for (int i = 1;i <= n;i++){
        cin >> a[i] >> b[i];
    }
    return;
}
void solve(){
    sort(a + 1,a + n + 1, cmp);
    sort(b + 1,b + n + 1, cmp);
    int l = 1, r = 1;
    while (l <= n or r <= n){
        if ( (L < R and l <= n) or (r == n + 1) ){
            L += a[l++];
        } else R += b[r++];
        --L;
        --R;
        ans = max(ans, min(L,R));
    }
    cout << fixed << setprecision(4) << ans;
    return;
}
int main(){
    ios_base::sync_with_stdio(NULL);
    cin.tie(NULL);
    cout.tie(NULL);
    if (fopen("file.inp", "r")){
        freopen("file.inp", "r", stdin);
        freopen("file.out", "w", stdout);
    }
    //int t;
    //cin >> t;
    //while(t--){
    inp();
    solve();
    //}
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen("file.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sure.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen("file.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2748 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2748 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 2 ms 2392 KB Output is correct
12 Correct 1 ms 2524 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2564 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2568 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2748 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 2 ms 2392 KB Output is correct
12 Correct 1 ms 2524 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2564 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2568 KB Output is correct
17 Correct 92 ms 6768 KB Output is correct
18 Correct 90 ms 6736 KB Output is correct
19 Correct 86 ms 6264 KB Output is correct
20 Correct 89 ms 6400 KB Output is correct
21 Correct 90 ms 6768 KB Output is correct
22 Correct 84 ms 6512 KB Output is correct
23 Correct 88 ms 6512 KB Output is correct
24 Correct 88 ms 6480 KB Output is correct
25 Correct 86 ms 6520 KB Output is correct
26 Correct 90 ms 6892 KB Output is correct