This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#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 (stderr)
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);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |