Submission #267323

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
267323	2020-08-16 03:37:15	leductoan	Foehn Phenomena (JOI17_foehn_phenomena)	C++14	100 / 100	496 ms	13944 KiB

foehn_phenomena

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#include<bits/stdc++.h>
using namespace std;
#define task "Phenomena"
#define lb lower_bound
#define ub upper_bound
#define alll(v) (v).begin(),(v).end()
#define szz(v) (v).size()
#define fi first
#define se second
#define pb push_back
#define FOR(i,a,b) for (ll i = (a), _b = (b); i <= _b; ++i)
#define FORD(i,b,a) for (ll i = (b), _a = (a); i >= _a; --i)
typedef long double ld;
typedef long long ll;
typedef pair<ll,ll> pii;
const ll MOD=1000000007; /// 998244353
const ll base=311; /// for hash actually
const ll N=2e5+5;
ll st[4*N],lazy[4*N],n,q,s,t,a[N];
void down(ll i, ll l, ll r)
{
    ll t=lazy[i];
    st[i<<1]+=t;
    st[i<<1|1]+=t;
    lazy[i<<1]+=t;
    lazy[i<<1|1]+=t;
    lazy[i]=0;
}
 
 
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Compilation message (stderr)

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:99:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   99 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:100:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  100 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60