제출 #1015767

#제출 시각아이디문제언어결과실행 시간메모리
1015767AliHasanliFoehn Phenomena (JOI17_foehn_phenomena)C++17
100 / 100
378 ms13408 KiB
#include<bits/stdc++.h> using namespace std; const long long N=2e5+5,mod=1e9+7; long long a[N],b[N],q,s,t,n,cur; void add(long long i,long long f){ if(i>n) return; if(b[i]>0) cur-=s*b[i]*f; else cur-=t*b[i]*f; } int main(){ cin>>n>>q>>s>>t; for(long long i=0;i<=n;i++){ cin >> a[i]; if(i)b[i]=a[i]-a[i-1]; add(i,1); } while(q--){ long long l,r,x; cin>>l>>r>>x; add(l,-1); add(r+1,-1); b[l]+=x; b[r+1]-=x; add(l,1); add(r+1,1); cout<<cur<<endl; } }
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