Submission #69510

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
69510	2018-08-21 06:55:51	top34051	Salesman (IOI09_salesman)	C++17	50 / 100	493 ms	66560 KiB

salesman

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#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 5e5 + 5;
const int maxv = 5e5 + 5;
const ll inf = 1e15;
struct node {
  int t,x,val;
};
int n,st;
ll U,D;
node a[maxn];
ll fenL[maxv+5], fenR[maxv+5], res[maxv+5];
void update(int x) {
  for(int i=x;i<=maxv;i+=(i&-i)) fenL[i] = max(fenL[i], res[x] + U*x);
  for(int i=x;i>=1;i-=(i&-i)) fenR[i] = max(fenR[i], res[x] - D*x);
}
ll query(int x) {
  ll ret = -inf;
  for(int i=x;i>=1;i-=(i&-i)) ret = max(ret, fenL[i] - U*x);
  for(int i=x;i<=maxv;i+=(i&-i)) ret = max(ret, fenR[i] + D*x);
  return ret;
}
int main() {
 
 
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Compilation message (stderr)

salesman.cpp: In function 'int main()':
salesman.cpp:31:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%lld%lld%d",&n,&D,&U,&st);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
salesman.cpp:32:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%d%d%d",&a[i].t,&a[i].x,&a[i].val);
                        ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 50 / 100