Submission #124433

#	Time	Username	Problem	Language	Result	Execution time	Memory
124433		AyaBenSaad	Strange Device (APIO19_strange_device)	C++14	10 / 100	5077 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
#define ll long long 
// sub 4
using namespace std;

const int M = 2e6 + 6;
int n;
ll a, b;
ll l[M], r[M];
set <pair <ll, ll> >s;

int main () {
    scanf ("%d %lld %lld", &n, &a, &b);
    for (int i = 0; i < n; i++) {
        scanf("%lld %lld", &l[i], &r[i]);
        for (long long j = l[i]; j <= r[i]; j++) {
            long long x = (j + (j/b)) % a;
            long long y = j % b;
            s.insert ({x, y});
        }
    }
    printf("%d\n", (int)s.size());

}
 

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:13:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d %lld %lld", &n, &a, &b);
     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &l[i], &r[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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