Submission #336459

#	Time	Username	Problem	Language	Result	Execution time	Memory
336459		beksultan04	Bigger segments (IZhO19_segments)	C++14	100 / 100	117 ms	16084 KiB

segments

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
const int N = 5e5+12,INF=1e9+7;
int q[N],p[N],dp[N];
main(){
    int n,m,i,j;
    scan1(n)
 
    priority_queue <pii> q;
    q.push({0,0});
    int tmp=0;
    for (i=1;i<=n;++i){
        int x;
        scan1(x)
        p[i]=p[i-1]+x;
 
    }
    for (i=1;i<=n;++i){
 
        while (!q.empty() && -q.top().fr <= p[i]){
            if (dp[tmp] < dp[q.top().sc]){
                tmp = q.top().sc;
            }
            if (dp[tmp] == dp[q.top().sc] && tmp < q.top().sc)tmp = q.top().sc;
            q.pop();
 
        }
        dp[i]=dp[tmp]+1;
        q.push({p[tmp]-p[i]*2,i});
    }
    cout <<dp[n];
 
}
 

Compilation message (stderr)

segments.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   18 | main(){
      |      ^
segments.cpp: In function 'int main()':
segments.cpp:19:11: warning: unused variable 'm' [-Wunused-variable]
   19 |     int n,m,i,j;
      |           ^
segments.cpp:19:15: warning: unused variable 'j' [-Wunused-variable]
   19 |     int n,m,i,j;
      |               ^
segments.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
segments.cpp:20:5: note: in expansion of macro 'scan1'
   20 |     scan1(n)
      |     ^~~~~
segments.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
segments.cpp:27:9: note: in expansion of macro 'scan1'
   27 |         scan1(x)
      |         ^~~~~

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