Submission #82927

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
829272018-11-02 21:02:23memetkagan44Split the sequence (APIO14_sequence)C++11
0 / 100
11 ms816 KiB
#include<bits/stdc++.h>
using namespace std;
vector<int> v;
queue<pair<int,int> > q;
int n,k,a,top[100005];
long long ans;
int main(){
scanf("%d %d",&n,&k);
for(int i=1;i<=n;i++){
scanf("%d",&a);
top[i]=top[i-1]+a;
}
q.push(make_pair(1,n));
while(!q.empty() && k>0){
k--;
int l=q.front().first,r=q.front().second;
q.pop();
int i=l;
if(l<r){
for(;top[i]-top[l-1]<=(top[r]-top[l-1])/2;i++);
if(abs((top[i-1]-top[l-1])-(top[r]-top[l-1])/2)<(top[i]-top[l-1])-(top[r]-top[l-1])/2)
i--;
ans+=(top[i]-top[l-1])*(top[r]-top[i]);
v.push_back(i);
q.push(make_pair(l,i));
q.push(make_pair(i+1,r));
}
}
printf("%lld\n",ans);
for(int i=0;i<v.size();i++){
 
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Compilation message (stderr)

sequence.cpp: In function 'int main()':
sequence.cpp:30:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v.size();i++){
                 ~^~~~~~~~~
sequence.cpp:32:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i<v.size()-1)
            ~^~~~~~~~~~~
sequence.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~~
sequence.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a);
         ~~~~~^~~~~~~~~
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