Submission #270444

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
270444	2020-08-17 15:37:51	doowey	Discharging (NOI20_discharging)	C++14	100 / 100	203 ms	14840 KiB

Discharging

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef long double ld;
#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
struct Line{
    ld ai;
    ld bi;
    ld ti;
};
ld intersect(Line t1, Line t2){
    return (t2.bi-t1.bi)/(t1.ai-t2.ai);
}
vector<Line> hull;
void add_line(Line nw){
    while(hull.size() >= 2 && intersect(hull[hull.size() - 2], nw) <= intersect(hull[hull.size() - 2],hull[hull.size() - 1])){
        hull.pop_back();
    }
    if(!hull.empty())
 
 
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Compilation message (stderr)

Discharging.cpp: In function 'int main()':
Discharging.cpp:56:15: warning: narrowing conversion of '- n' from 'int' to 'ld' {aka 'long double'} [-Wnarrowing]
   56 |     add_line({-n,0,(ll)1e18});
      |               ^~
Discharging.cpp:63:19: warning: narrowing conversion of '-(n - i)' from 'int' to 'ld' {aka 'long double'} [-Wnarrowing]
   63 |         add_line({-(n-i), -dp[i], (ll)1e18});
      |                   ^~~~~~
Discharging.cpp:63:27: warning: narrowing conversion of '- dp[i]' from 'll' {aka 'long long int'} to 'ld' {aka 'long double'} [-Wnarrowing]
   63 |         add_line({-(n-i), -dp[i], (ll)1e18});
      |                           ^~~~~~

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