Submission #120782

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
120782	2019-06-25 13:14:15	PeppaPig	Strange Device (APIO19_strange_device)	C++14	35 / 100	895 ms	33452 KiB

strange_device

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#include <bits/stdc++.h>
#define long long long
#define pii pair<long, long>
#define x first
#define y second
using namespace std;
const int N = 1e6+5;
int n;
long A, B, cyc;
vector<pii> v;
int main() {
    scanf("%d %lld %lld", &n, &A, &B);
    cyc = A / __gcd(B+1, A);
    cyc *= B;
    for(int i = 1; i <= n; i++) {
        long l, r;
        scanf("%lld %lld", &l, &r);
        if(r - l + 1 >= cyc) v.emplace_back(0, 1), v.emplace_back(cyc, -1);
        else {
            l %= cyc, r %= cyc;
            v.emplace_back(l, 1);
            v.emplace_back(r + 1, -1); 
            if(l > r) {
                v.emplace_back(0, 1);
 
 
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Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:37:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0, cnt = 0; i < v.size(); ) {
                             ~~^~~~~~~~~~
strange_device.cpp:17:10: 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:23:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &l, &r);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

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