Submission #334150

#	Time	Username	Problem	Language	Result	Execution time	Memory
334150		Kerim	Bigger segments (IZhO19_segments)	C++17	0 / 100	1 ms	384 KiB

segments

#include "bits/stdc++.h"
#define MAXN 500009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int dp[MAXN],arr[MAXN],n;
ll par[MAXN];
bool vis[MAXN];
int get(int i){
	return lower_bound(par+i+1,par+n+1,2*par[i]-par[dp[i]])-par;
}
int main(){
   // freopen("file.in", "r", stdin);
    int n,ok;
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
    	scanf("%d",arr+i);
    	par[i]=par[i-1]+arr[i];
    }
    for(int i=1;i<=n;i++)
    	vis[i]=1;
    for(int j=2;j<=n;j++){
    	ok=0;
    	for(int i=n;i>=j-1;i--)
    		if(vis[i]){
				for(int k=get(i);k<=n;k++)
					if(!vis[k])
						dp[k]=i,ok=1,vis[k]=1;
				vis[i]=0;
			}
		if(!ok){
			printf("%d\n",j-1);	
			return 0;
		}
    }printf("%d\n",n);
	return 0;
}

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:38:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   38 |      for(int i=n;i>=j-1;i--)
      |      ^~~
segments.cpp:45:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   45 |   if(!ok){
      |   ^~
segments.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
segments.cpp:31:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 |      scanf("%d",arr+i);
      |      ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27