Submission #120825

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
120825	2019-06-25 14:44:52	nvmdava	Strange Device (APIO19_strange_device)	C++17	100 / 100	998 ms	33452 KiB

strange_device

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#include <bits/stdc++.h>
 
using namespace std;
 
using ll = long long;
const ll inf = 4e18;
 
ll mul(ll a, ll b) {
   if (a > (inf / b)) {
      return inf;
   } else {
      return a * b;
   }
}
 
int main() {
   ios_base::sync_with_stdio(false);
   int n;
   cin >> n;
   ll A, B;
   cin >> A >> B;
   A /= __gcd(A, B + 1);
   ll C = mul(A, B);
   vector<pair<ll, int>> go;
   for (int i = 0; i < n; ++i) {
      ll l, r;
      cin >> l >> r;
      if (r - l + 1 >= C) {
         go.emplace_back(0, 1);
         go.emplace_back(C, -1);
 
 
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Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:47:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while (l < go.size()) {
           ~~^~~~~~~~~~~
strange_device.cpp:49:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       while (r < go.size() && go[r].first == go[l].first) {
              ~~^~~~~~~~~~~

• 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