Submission #370470

#	Time	Username	Problem	Language	Result	Execution time	Memory
370470		daniel920712	Bigger segments (IZhO19_segments)	C++14	37 / 100	1567 ms	3292 KiB

segments

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>

using namespace std;
long long all[500005];
pair < long long ,long long > DP[500005];
long long sum[500005]={0},N;

int main()
{
    long long i,j,k,ans=0;
    scanf("%lld",&N);
    for(i=1;i<=N;i++)
    {
        scanf("%lld",&all[i]);
        sum[i]=all[i]+sum[i-1];
    }
    DP[0]=make_pair(0,0);

    for(i=1;i<=N;i++)
    {
        DP[i]=make_pair(0,0);
        for(j=0;j<i;j++)
        {
            if(sum[i]-sum[j]>=DP[j].second)
            {
                if(DP[j].first+1>DP[i].first) DP[i]=make_pair(DP[j].first+1,sum[i]-sum[j]);
                else if(DP[j].first+1==DP[i].first) DP[i]=make_pair(DP[j].first+1,min(DP[i].second,sum[i]-sum[j]));
            }
        }
    }
    printf("%lld\n",DP[N].first);
    return 0;
}

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:13:19: warning: unused variable 'k' [-Wunused-variable]
   13 |     long long i,j,k,ans=0;
      |                   ^
segments.cpp:13:21: warning: unused variable 'ans' [-Wunused-variable]
   13 |     long long i,j,k,ans=0;
      |                     ^~~
segments.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |     scanf("%lld",&N);
      |     ~~~~~^~~~~~~~~~~
segments.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |         scanf("%lld",&all[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~

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