oj.uz

Submission #50482

# Submission time Handle Problem Language Result Execution time Memory
50482 2018-06-11T06:37:00 Z ayhcbagnop Wiring (IOI17_wiring) C++14
13 / 100
 63 ms 8716 KB 
#ifdef atom
    #include "grader.cpp"
#endif
#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
#define X first
#define Y second
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<int, int> ii;
vector<int> x;
vector<int> pong;
vector<int> prv;
vector< vector< ll > > pref;
vector< vector< ll > > dp;
vector< vector<int> > buck;
long long min_total_length(std::vector<int> r, std::vector<int> b)
{
    int ir, ib; ir = ib = 0;
    while(ir< r.size() && ib< b.size())
    {
        if(r[ir]< b[ib])
        {
            x.pb(r[ir]); pong.pb(0);
            ir++;
        }
        else
        {
            x.pb(b[ib]); pong.pb(1);
            ib++;
        }
    }
    while(ir< r.size()) x.pb(r[ir++]), pong.pb(0);
    while(ib< b.size()) x.pb(b[ib++]), pong.pb(1);
    ll last = -1e18;
    int n = pong.size();
    for(int i = 0; i< n; i++)
    {
        if(i && pong[i] != pong[i-1]) last = x[i-1];
        prv.pb(last);
    }
    pref.pb(vector<ll>());
    buck.pb(vector<int>());
    for(int i = 0; i< n; i++)
    {
        if(i && pong[i] != pong[i-1])
        {
            pref.pb(vector<ll>());
            buck.pb(vector<int>());
        }
        pref.back().pb(pref.back().empty()?x[i]:(pref.back().back()+x[i])   );
        buck.back().pb(x[i]);
    }
    dp.resize(pref.size());
    int comps = pref.size();
    for(int i = 0; i< (int) dp.size(); i++)
    {
        dp[i].resize(pref[i].size()+1);
    }
    for(int i = comps-1; i>= 0; i--)
    {
        if(i == comps-1) dp[i][pref[i].size()] = 0;
        else dp[i][pref[i].size()] = dp[i+1][0];
        //printf("%d\n", i);
        for(int j = pref[i].size()-1; j>= 0; j--)
        {
            //printf("dp[%d][%d]\n", i, j);
            int numleft = pref[i].size()-j;
            //printf("numleft = %d ((%d))->(%d)\n", numleft, pref[i].size()-numleft-1, pref[i][pref[i].size()-1]);
            ll sumhere = pref[i][pref[i].size()-1]-(((int)pref[i].size()-numleft-1>= 0)?pref[i][pref[i].size()-numleft-1]:0ll);
            ll sumnext;
            if(i+1< comps)
            {
                if(numleft-1< pref[i+1].size()) sumnext = pref[i+1][numleft-1];
                else sumnext = pref[i+1].back() + pref[i+1][0]*(numleft-pref[i+1].size());
            }
            else sumnext = 1e18;
            //printf("sumnext %lld sumhere %lld\n", sumnext, sumhere);
            ll prev;
            if(i) prev = buck[i-1].back();
            else prev = -1e18;
            dp[i][j] = min(i+1< comps?dp[i+1][min(numleft, (int)pref[i+1].size())]+sumnext-sumhere:(ll)1e18, dp[i][j+1]+buck[i][j]-prev);
            //printf("dp[%d][%d] = %lld\n", i, j, dp[i][j]);
        }
    }
    return dp[0][0];
}

Compilation message

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:22:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ir< r.size() && ib< b.size())
           ~~^~~~~~~~~~
wiring.cpp:22:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ir< r.size() && ib< b.size())
                           ~~^~~~~~~~~~
wiring.cpp:35:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ir< r.size()) x.pb(r[ir++]), pong.pb(0);
           ~~^~~~~~~~~~
wiring.cpp:36:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ib< b.size()) x.pb(b[ib++]), pong.pb(1);
           ~~^~~~~~~~~~
wiring.cpp:76:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(numleft-1< pref[i+1].size()) sumnext = pref[i+1][numleft-1];
                    ~~~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 436 KB 3rd lines differ - on the 1st token, expected: '15280', found: '15398'
4 Halted 0 ms 0 KB -

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 436 KB Output is correct
2 Correct 2 ms 444 KB Output is correct
3 Correct 33 ms 6668 KB Output is correct
4 Correct 35 ms 6688 KB Output is correct
5 Correct 34 ms 7152 KB Output is correct
6 Correct 63 ms 8604 KB Output is correct
7 Correct 53 ms 8640 KB Output is correct
8 Correct 46 ms 8700 KB Output is correct
9 Correct 48 ms 8716 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8716 KB Output is correct
2 Incorrect 2 ms 8716 KB 3rd lines differ - on the 1st token, expected: '17703', found: '18722'
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 8716 KB 3rd lines differ - on the 1st token, expected: '27', found: '30'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 436 KB 3rd lines differ - on the 1st token, expected: '15280', found: '15398'
4 Halted 0 ms 0 KB -