Submission #1014153

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014153		MarwenElarbi	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	1 ms	600 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;
#define pb push_back
#define ll long long
long long delivery(int N, int K, int L, int p[]) {
    vector<int> a;
    vector<int> b;
    int k=K;
    long long res=1e18;
    for (int i = 0; i < N; ++i)
    {
        if(p[i]==0) continue;
        a.pb(p[i]);
        b.pb(L-p[i]);
    }
    if(a.size()==0) return 0;
    reverse(b.begin(),b.end());
    ll cur=0;
    int cnt=0;
    vector<ll> l(a.size()),r(a.size());
    for (int i = 0; i < a.size(); ++i)
    {   
        cnt++;
        if(cnt==k){
            cur+=a[i]*2;
            cnt=0;
            l[i]=cur;
        }
        else{
            l[i]=a[i]*2+cur;
        }
    }
    cnt=0;
    cur=0;
    for (int i = 0; i < b.size(); ++i)
    {   
        cnt++;
        if(cnt==k){
            cur+=b[i]*2;
            cnt=0;
            r[i]=cur;
        }
        else{
            r[i]=b[i]*2+cur;
        }
    }
    res=L+(a.size()>k ? r[a.size()-k-1] : 1ll*0);
    for (int i = 0; i < a.size(); ++i)
    {
        res=min(res,l[i]+(a.size()>=i+2 ? r[a.size()-i-2] : 0));
        res=min(res,l[i]-a[i]+L+(a.size()>i+k ? r[a.size()-k-i-1] : 1ll*0));
    }
    return res;
}
/*
static char _buffer[1024];
static int _currentChar = 0;
static int _charsNumber = 0;
static FILE *_inputFile, *_outputFile;
 
 
int main() {
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    int N, K, L, i;
    cin>>N>>K>>L;
    int *p = (int*)malloc(sizeof(int) * (unsigned int)N);
 
    for (i = 0; i < N; i++) {
        cin>>p[i];
    }
 
    cout << delivery(N, K, L, p)<<endl;
    return 0;
}*/

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for (int i = 0; i < a.size(); ++i)
      |                     ~~^~~~~~~~~~
boxes.cpp:36:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for (int i = 0; i < b.size(); ++i)
      |                     ~~^~~~~~~~~~
boxes.cpp:48:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |     res=L+(a.size()>k ? r[a.size()-k-1] : 1ll*0);
      |            ~~~~~~~~^~
boxes.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for (int i = 0; i < a.size(); ++i)
      |                     ~~^~~~~~~~~~
boxes.cpp:51:35: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   51 |         res=min(res,l[i]+(a.size()>=i+2 ? r[a.size()-i-2] : 0));
      |                           ~~~~~~~~^~~~~
boxes.cpp:52:42: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   52 |         res=min(res,l[i]-a[i]+L+(a.size()>i+k ? r[a.size()-k-i-1] : 1ll*0));
      |                                  ~~~~~~~~^~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30