oj.uz

Submission #671591

# Submission time Handle Problem Language Result Execution time Memory
671591 2022-12-13T09:06:48 Z Baytoro Divide and conquer (IZhO14_divide) C++17
100 / 100
 35 ms 3476 KB 
#include <bits/stdc++.h>
using namespace std;
#define ios ios::sync_with_stdio(false); cin.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define int long long
#define endl '\n'
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
const int INF=1e9+9,mod=1e9+7;
int n,m;
void solve(){
	cin>>n;
	vector<int> x(n+1),g(n+1),d(n+1),pref(n+1);
	for(int i=1;i<=n;i++)
		cin>>x[i]>>g[i]>>d[i];
	for(int i=1;i<=n;i++){
		d[i]+=d[i-1];
		g[i]+=g[i-1];
		pref[i]=d[i-1]-x[i];
	}
	pref[0]=INF;
	for(int i=1;i<=n;i++)
		pref[i]=min(pref[i],pref[i-1]);
	for(int i=0;i<=n;i++)
		pref[i]=-pref[i];
	int res=0;
	for(int i=1;i<=n;i++){
		int X=d[i]-x[i];
		int r=i,l=lower_bound(all(pref),-X)-pref.begin();
		//cout<<l<<' '<<r<<endl;
		if(l==0) l=1;
		res=max(res,g[r]-g[l-1]);
	}
	cout<<res;
}
main(){
	ios;
	int T=1;
	//cin>>T;
	while(T--){
		solve();
	}
}

Compilation message

divide.cpp:42:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   42 | main(){
      | ^~~~
divide.cpp: In function 'void fopn(std::string)':
divide.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
divide.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct

Subtask #3
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 3 ms 596 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 13 ms 1876 KB Output is correct
29 Correct 15 ms 1904 KB Output is correct
30 Correct 30 ms 3412 KB Output is correct
31 Correct 24 ms 3476 KB Output is correct
32 Correct 31 ms 3412 KB Output is correct
33 Correct 24 ms 3412 KB Output is correct
34 Correct 26 ms 3412 KB Output is correct
35 Correct 32 ms 3456 KB Output is correct
36 Correct 35 ms 3412 KB Output is correct