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Submission #29393

# Submission time Handle Problem Language Result Execution time Memory
29393 2017-07-19T08:19:06 Z PrOAhMeT Foehn Phenomena (JOI17_foehn_phenomena) C++14
30 / 100
 416 ms 5924 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define LL long long
#define st first
#define nd second
#define endl '\n'
using namespace std;

const int MAXN=200015;
int n,q,a[MAXN];
LL s,tt;

struct fenwick_tree {
	
	LL fen[MAXN];

	void upd(int x,LL y) {

		++x;
		for(;x<MAXN;x+=x&(-x))
			fen[x]+=y;

	}

	LL get(int x) {

		++x;
		LL ret=0;
		for(;x;x-=x&(-x))
			ret+=fen[x];
		return ret;

	}

} h,t;

int main() {

	cin>>n>>q>>s>>tt;
	LL temp=0;
	for(int i=0;i<=n;++i) {
		cin>>a[i];
		if(i>0) {
			if(a[i]>a[i-1]) {
				t.upd(i,-s*(a[i]-a[i-1]));
			}
			else {
				t.upd(i,tt*(a[i-1]-a[i]));
			}
		}
		if(i) h.upd(i,a[i]-a[i-1]);
		else h.upd(i,a[i]);
	}
	int l,r,x;
	LL bef,cur,beft,curt,nw;
	for(int i=0;i<q;++i) {
		cin>>l>>r>>x;
		LL oldl,oldr;
		if(l>0)
			oldl=t.get(l)-t.get(l-1);
		if(r<n)
			oldr=t.get(r+1)-t.get(r);
		h.upd(l,x);
		h.upd(r+1,-x);
		if(l>0) {
			bef=h.get(l-1);
			cur=h.get(l);
			if(bef>cur) {
				t.upd(l,tt*(bef-cur)-oldl);
			}
			else t.upd(l,-s*(cur-bef)-oldl);
		}
		if(r<n) {
			bef=h.get(r);
			cur=h.get(r+1);
			if(cur<bef) {
				t.upd(r+1,tt*(bef-cur)-oldr);
			}
			else t.upd(r+1,-s*(cur-bef)-oldr);
		}
		//cout<<"update "<<i+1<<endl;
		//for(int j=0;j<=n;++j)
			//cout<<j<<" "<<t.get(j)<<" "<<h.get(j)<<endl;
		printf("%lld\n",t.get(n));
	}

}

Compilation message

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:42:5: warning: unused variable 'temp' [-Wunused-variable]
  LL temp=0;
     ^
foehn_phenomena.cpp:57:13: warning: unused variable 'beft' [-Wunused-variable]
  LL bef,cur,beft,curt,nw;
             ^
foehn_phenomena.cpp:57:18: warning: unused variable 'curt' [-Wunused-variable]
  LL bef,cur,beft,curt,nw;
                  ^
foehn_phenomena.cpp:57:23: warning: unused variable 'nw' [-Wunused-variable]
  LL bef,cur,beft,curt,nw;
                       ^
foehn_phenomena.cpp:73:14: warning: 'oldl' may be used uninitialized in this function [-Wmaybe-uninitialized]
    else t.upd(l,-s*(cur-bef)-oldl);
              ^

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 5924 KB Output is correct
2 Correct 3 ms 5924 KB Output is correct
3 Correct 9 ms 5924 KB Output is correct
4 Correct 6 ms 5924 KB Output is correct
5 Correct 6 ms 5924 KB Output is correct
6 Correct 6 ms 5924 KB Output is correct
7 Correct 6 ms 5924 KB Output is correct
8 Correct 6 ms 5924 KB Output is correct
9 Correct 9 ms 5924 KB Output is correct
10 Correct 19 ms 5924 KB Output is correct
11 Correct 16 ms 5924 KB Output is correct
12 Correct 23 ms 5924 KB Output is correct
13 Correct 9 ms 5924 KB Output is correct
14 Correct 3 ms 5924 KB Output is correct
15 Correct 3 ms 5924 KB Output is correct
16 Correct 6 ms 5924 KB Output is correct
17 Correct 9 ms 5924 KB Output is correct
18 Correct 9 ms 5924 KB Output is correct
19 Correct 0 ms 5924 KB Output is correct
20 Correct 0 ms 5924 KB Output is correct
21 Correct 0 ms 5924 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 416 ms 5924 KB Execution timed out (wall clock limit exceeded)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 5924 KB Output is correct
2 Correct 3 ms 5924 KB Output is correct
3 Correct 9 ms 5924 KB Output is correct
4 Correct 6 ms 5924 KB Output is correct
5 Correct 6 ms 5924 KB Output is correct
6 Correct 6 ms 5924 KB Output is correct
7 Correct 6 ms 5924 KB Output is correct
8 Correct 6 ms 5924 KB Output is correct
9 Correct 9 ms 5924 KB Output is correct
10 Correct 19 ms 5924 KB Output is correct
11 Correct 16 ms 5924 KB Output is correct
12 Correct 23 ms 5924 KB Output is correct
13 Correct 9 ms 5924 KB Output is correct
14 Correct 3 ms 5924 KB Output is correct
15 Correct 3 ms 5924 KB Output is correct
16 Correct 6 ms 5924 KB Output is correct
17 Correct 9 ms 5924 KB Output is correct
18 Correct 9 ms 5924 KB Output is correct
19 Correct 0 ms 5924 KB Output is correct
20 Correct 0 ms 5924 KB Output is correct
21 Correct 0 ms 5924 KB Output is correct
22 Runtime error 416 ms 5924 KB Execution timed out (wall clock limit exceeded)
23 Halted 0 ms 0 KB -