Submission #51378

#	Time	Username	Problem	Language	Result	Execution time	Memory
51378		adamczh1	Sure Bet (CEOI17_sure)	C++17	20 / 100	77 ms	744 KiB

sure

#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e5 + 5;

int n;
double a[MAXN], b[MAXN];

int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%lf %lf", &a[i], &b[i]);
	}
	double res = 0;
	for (int mask = 0; mask < (1 << (2 * n)); mask++) {
		double x = 0, y = 0;
		for (int i = 0; i < n; i++) {
			if ((mask >> (2 * i)) & 1) {
				x += a[i] - 1;
				y--;
			}
			if ((mask >> (2 * i + 1)) & 1) {
				x--;
				y += b[i] - 1;
			}
		}
		res = max(res, min(x, y));
	}
	printf("%.4lf", res);
	return 0;
}

Compilation message (stderr)

sure.cpp: In function 'int main()':
sure.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
sure.cpp:12:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lf %lf", &a[i], &b[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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