Submission #243702

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
243702	2020-07-01 15:16:01	neihcr7j	Strange Device (APIO19_strange_device)	C++14	100 / 100	899 ms	69016 KiB

strange_device

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#include<bits/stdc++.h>
#define maxn 100005
using namespace std;
typedef long long ll;
ll n, a, b;
ll ret;
int main(){
  #define TASK "ABC"
//  freopen(TASK".inp", "r", stdin); freopen(TASK".out", "w", stdout);
  ios_base::sync_with_stdio(0);
  cin >> n >> a >> b;
  ret = __gcd(a, b + 1);
  ret = a / ret;
  if (sqrt(ret) * sqrt(b) > 1e9) {
    ll ans = 0;
    for (int i = 0; i < n; ++i) {
      ll l, r;
      cin >> l >> r;
      ans += r + 1;
      ans -= l;
    }
    cout << ans;
 
 
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Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:65:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i + 1 < q.size(); ++i) {
                   ~~~~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30