Submission #204673

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
204673	2020-02-26 15:20:36	nhho	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	220 ms	15204 KiB

bulves

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#include <bits/stdc++.h>
using namespace std;
int n;
long long ans, x[500001];
priority_queue<long long> q;
int main() {
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    int ta, tb;
    scanf("%d%d", &ta, &tb);
    x[i + 1] = x[i] + ta - tb;
  }
  for (int i = 1; i < n; i++) {
    if (x[i] < 0) {
      ans -= x[i];
      x[i] = 0;
    } else if (x[i] > x[n]) {
      ans += x[i] - x[n];
      x[i] = x[n];
    }
    q.push(x[i]);
    ans += q.top() - x[i];
    q.push(x[i]);
    q.pop();
  }
  printf("%lld\n", ans);
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

bulves.cpp: In function 'int main()':
bulves.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
bulves.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &ta, &tb);
   ~~~~~^~~~~~~~~~~~~~~~~~

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