Submission #979893

#	Time	Username	Problem	Language	Result	Execution time	Memory
979893		pera	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	444 ms	13176 KiB

foehn_phenomena

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N = 2e5 + 1;
main(){
   int n , q , S , T , sum = 0;
   cin >> n >> q >> S >> T;
   vector<int> A(n + 1) , d(n + 1);
   auto value = [&](int x){
     return -d[x] * (d[x] > 0 ? S : T); 
   };
   for(int i = 0;i <= n;i ++){
      cin >> A[i];
      if(i > 0){
         d[i] = A[i] - A[i - 1];
         sum += value(i);
      }
   }
   while(q--){
      int l , r , x;
      cin >> l >> r >> x;
      sum -= value(l);
      d[l] += x;
      sum += value(l);
      if(r < n){
         sum -= value(r + 1);
         d[r + 1] -= x; 
         sum += value(r + 1);
      }
      cout << sum << endl;
   }
}

Compilation message (stderr)

foehn_phenomena.cpp:5:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 | main(){
      | ^~~~

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