Submission #261330

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
261330	2020-08-11 16:16:46	Nightlight	Discharging (NOI20_discharging)	C++14	100 / 100	248 ms	30052 KiB

Discharging

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#include <bits/stdc++.h>
#define pii pair<long long, long long>
#define inter second
#define slope first
using namespace std;
int N;
long long A[1000005], ans = LLONG_MAX;
long long T[1000005];
long long pos[1000005];
long long dp[1000005];
pii CHT[100005];
int sz, pointer;
int p;
inline double isect(pii a, pii b) {return (a.inter - b.inter) / (b.slope - a.slope);}
inline bool bad(pii a, pii b, pii c) {return isect(c, a) < isect(a, b);}
inline long long val(long long X, int id) {return CHT[id].slope * X + CHT[id].inter;}
void insert(long long m, long long b) {
  pii L = {m, b};
  while(sz > 1 && bad(CHT[sz - 1], CHT[sz], L)) sz--;
  CHT[++sz] = L;
}
long long query(long long X) {
  long long res = LLONG_MAX;
//  cout << X << "\n";
  for(int i = 1; i <= sz; i++) {
    res = min(res, val(X, i));
 
 
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Compilation message (stderr)

Discharging.cpp: In function 'int main()':
Discharging.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &N);
   ~~~~~^~~~~~~~~~
Discharging.cpp:40:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &T[i]);
     ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28