Submission #384122

#	Time	Username	Problem	Language	Result	Execution time	Memory
384122		LucaDantas	Potatoes and fertilizers (LMIO19_bulves)	C++17	0 / 100	1 ms	364 KiB

bulves

#include <cstdio>
#include <queue>

std::priority_queue<long long> q;

int main() {
	long long d, ans = 0;
	int n; scanf("%d", &n);
	for(int i = 0; i < n; i++) {
		int a, b; scanf("%d %d", &a, &b);
		d += a - b;
		if(d < 0) ans += -d;
		if(q.size() && d < q.top()) ans += q.top() - (d<0?0:d), q.pop(), q.push(d<0?0:d);
		q.push(d<0?0:d);
	}
	printf("%lld\n", ans);
}

Compilation message (stderr)

bulves.cpp: In function 'int main()':
bulves.cpp:8:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
bulves.cpp:10:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |   int a, b; scanf("%d %d", &a, &b);
      |             ~~~~~^~~~~~~~~~~~~~~~~
bulves.cpp:11:5: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
   11 |   d += a - b;
      |   ~~^~~~~~~~

• Subtask 1: 0 / 24
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 36