Submission #782140

#	Time	Username	Problem	Language	Result	Execution time	Memory
782140		andecaandeci	Strange Device (APIO19_strange_device)	C++17	0 / 100	5081 ms	405144 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,a,b;
ll l[1000005],r[1000005];
int main(){
    scanf("%lld %lld %lld",&n,&a,&b);
    ll s=0;
    for (int i=1;i<=n;i++){
        scanf("%lld %lld",&l[i],&r[i]);
        s+=(r[i]-l[i])+1;
    }
    if (s<1000005){
        set<pair<ll,ll>> st;
        for (int i=1;i<=n;i++){
            for (int j=l[i];j<=r[i];j++){
                st.insert({(j+j/b)%a,j%b});
            }
        }
        printf("%lld",st.size());
    }
    // else if ()
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:20:20: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'std::set<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wformat=]
   20 |         printf("%lld",st.size());
      |                 ~~~^  ~~~~~~~~~
      |                    |         |
      |                    |         std::set<std::pair<long long int, long long int> >::size_type {aka long unsigned int}
      |                    long long int
      |                 %ld
strange_device.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%lld %lld %lld",&n,&a,&b);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         scanf("%lld %lld",&l[i],&r[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 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