Submission #1031795

#	Time	Username	Problem	Language	Result	Execution time	Memory
1031795		KasymK	Strange Device (APIO19_strange_device)	C++17	10 / 100	5054 ms	524288 KiB

strange_device

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int MOD = 1e9+7;
const int N = 1e5+5;

int main(){
	// freopen("file.txt", "r", stdin);
	int n, a, b;
	set<pair<ll, ll>> s;
	scanf("%d%d%d", &n, &a, &b);
	for(int i = 1; i <= n; ++i){
		ll l, r;
		scanf("%lld%lld", &l, &r);
		for(ll t = l; t <= r; ++t){
			ll x = (t+t/b)%a, y = t%b;
			s.insert({x, y});
		}
	}
	int answer = (int)s.size();
	printf("%d\n", answer);
	return 0;
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  scanf("%d%d%d", &n, &a, &b);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   scanf("%lld%lld", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30