oj.uz

Submission #896976

# Submission time Handle Problem Language Result Execution time Memory
896976 2024-01-02T11:43:50 Z nightfal Wiring (IOI17_wiring) C++14
17 / 100
 1000 ms 7388 KB 
#include "wiring.h"
#include <cassert>
#include <cstdio>
#include <vector>
#include <climits>
#include <stdlib.h>
#include <algorithm>

using namespace std;
 
bool isSubtask1(std::vector<int> r, std::vector<int> b) {return r.size()<=200 && b.size()<=200;}
bool isSubtask2(std::vector<int> r, std::vector<int> b) {return r[r.size()-1]<b[0];}
bool isSubtask3(std::vector<int> r, std::vector<int> b) {
    int n=r.size(), m=b.size();
    vector<int> a(n+m);
   
    for(int i=0, j=0; i<n || j<m;)
        i==n? a[i+j++]=1: j==m? a[j+i++]=0: r[i]<b[j]? a[j+i++]=0:a[i+j++] = 1;

    int cnt = 1;
    for(int k=1; k<n+m; k++) {
        cnt = a[k]==a[k-1]? cnt+1:0;
        if (cnt > 6) return false;
    }
  return true;
}
 
long long subtask1(std::vector<int>, std::vector<int>);
long long subtask2(std::vector<int> &, std::vector<int> &, int, int, int, int);
long long subtask3(std::vector<int>, std::vector<int>);
long long min_total_length(std::vector<int>, std::vector<int> );

 
long long min_total_length(std::vector<int> r, std::vector<int> b) {
    // if (isSubtask4(r,b)) return subtask4(r,b);
    return subtask3(r,b);
    if (isSubtask3(r,b)) return subtask3(r,b);
  	else if (isSubtask2(r,b)) return subtask2(r,b,0,r.size()-1,0,b.size()-1);    
  	else if (isSubtask1(r,b)) return subtask1(r,b);
//     else return fullTask(r,b);
    return 0;
}
 
long long subtask3(std::vector<int> r, std::vector<int> b) {
    int n = r.size(), m = b.size();
    vector<pair<int,int>> a(n+m);
    
    for(int i=0, j=0; i<n || j<m;) // make_pair 내부에서 ++ 하면 안됨
        i==n? a[i+j++]=make_pair(j,1): j==m? a[j+i++]=make_pair(i,0): r[i]<b[j]? a[j+i++]=make_pair(i,0): a[i+j++]=make_pair(j,1);

    vector<long long> dp(n+m,LLONG_MAX);
    int prev=0, curr=0;
    for(curr=1; curr<n+m; curr++) 
        if (a[curr].second != a[curr-1].second) break;

    long long sumL=0, cntL=0, sumR=0, cntR=0;
    long long gap= a[prev].second==0? b[a[curr].first]-r[a[curr-1].first]: r[a[curr].first]-b[a[curr-1].first];

    for(int i=curr; i<n+m; i++) {
        // sumR += a[curr].second==0? r[a[i].first]-r[a[curr].first]:b[a[i].first]-b[a[curr].first];
        // cntR++;
        // for(int j=curr-1; j>=prev; j--) {
        //     cntL++; 
        //     sumL += a[prev].second==0? r[a[curr-1].first]-r[a[j].first]:b[a[curr-1].first]-b[a[j].first]; 
        //     long long temp = sumL + sumR + max(cntL,cntR)*gap;
        //     if (j!=0) temp += min(dp[j-1],dp[j]);        
        //     if (dp[i]>temp) dp[i]=temp;
        //     // printf("dp[%d,%d]=%d, sumL=%d, sumR=%d, gap=%d\n",i,j,dp[i],sumL,sumR,gap);

        // }
        // sumL=cntL=0;
        // if (i<n+m-1 && a[i].second != a[i+1].second) {
        //     prev=curr; curr=i+1; sumR=cntR=0;
        //     gap= a[prev].second==0? b[a[curr].first]-r[a[curr-1].first]: r[a[curr].first]-b[a[curr-1].first];
        // }

        for(int j =prev; j<curr; j++) {
            long long temp;
            if (a[prev].second==0)
                temp = subtask2(r,b,a[j].first,a[curr-1].first,a[curr].first,a[i].first);
            else
                temp = subtask2(b,r,a[j].first,a[curr-1].first,a[curr].first,a[i].first);
            
            if (j!=0) {
                long long minDP = min(dp[j-1],dp[j]);
                if (minDP >= LLONG_MAX) continue;
                else temp += minDP;
            }
            if (dp[i]>temp) dp[i] = temp;            
        }
        if (i<n+m-1 && a[i].second != a[i+1].second) {prev = curr; curr = i+1;}
    }
    return dp[n+m-1];
}

long long subtask2(std::vector<int> &arr1, std::vector<int> &arr2, int s1, int e1, int s2, int e2) {
  long long sum1=0, sum2=0, n = e1-s1+1, m=e2-s2+1;
  for(int i=s1; i<=e1; i++) sum1 += arr1[e1] - arr1[i];
  for(int i=s2; i<=e2; i++) sum2 += arr2[i] - arr2[s2];
  return sum1+sum2+max(n,m)*(arr2[s2]-arr1[e1]);
}

long long subtask1(std::vector<int> r, std::vector<int> b) {
	int n = r.size(), m = b.size();
    long long dp[n][m];
  	dp[0][0] = abs(r[0]-b[0]);
  	for(int i=1; i<n; i++) dp[i][0] = dp[i-1][0] + abs(r[i]-b[0]);
    for(int j=1; j<m; j++) dp[0][j] = dp[0][j-1] + abs(r[0]-b[j]);
  	for(int i=1; i<n; i++)  	
      for(int j=1; j<m; j++)
        dp[i][j] = min(min(dp[i-1][j],dp[i][j-1]),dp[i-1][j-1]) + abs(r[i]-b[j]);

	return dp[n-1][m-1];
}

Compilation message

wiring.cpp: In function 'long long int subtask3(std::vector<int>, std::vector<int>)':
wiring.cpp:56:15: warning: unused variable 'sumL' [-Wunused-variable]
   56 |     long long sumL=0, cntL=0, sumR=0, cntR=0;
      |               ^~~~
wiring.cpp:56:23: warning: unused variable 'cntL' [-Wunused-variable]
   56 |     long long sumL=0, cntL=0, sumR=0, cntR=0;
      |                       ^~~~
wiring.cpp:56:31: warning: unused variable 'sumR' [-Wunused-variable]
   56 |     long long sumL=0, cntL=0, sumR=0, cntR=0;
      |                               ^~~~
wiring.cpp:56:39: warning: unused variable 'cntR' [-Wunused-variable]
   56 |     long long sumL=0, cntL=0, sumR=0, cntR=0;
      |                                       ^~~~
wiring.cpp:57:15: warning: unused variable 'gap' [-Wunused-variable]
   57 |     long long gap= a[prev].second==0? b[a[curr].first]-r[a[curr-1].first]: r[a[curr].first]-b[a[curr-1].first];
      |               ^~~
wiring.cpp: In function 'long long int subtask1(std::vector<int>, std::vector<int>)':
wiring.cpp:110:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  110 |       for(int j=1; j<m; j++)
      |       ^~~
wiring.cpp:113:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  113 |  return dp[n-1][m-1];
      |  ^~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 3 ms 436 KB Output is correct
8 Correct 3 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 3 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 420 KB Output is correct

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 4 ms 348 KB Output is correct
3 Execution timed out 1079 ms 5372 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 27 ms 6996 KB Output is correct
4 Correct 29 ms 6968 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 27 ms 6928 KB Output is correct
19 Correct 27 ms 7052 KB Output is correct
20 Correct 34 ms 7388 KB Output is correct
21 Correct 30 ms 6996 KB Output is correct
22 Correct 31 ms 6916 KB Output is correct
23 Correct 28 ms 6956 KB Output is correct
24 Correct 28 ms 7000 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Execution timed out 1089 ms 6600 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 3 ms 436 KB Output is correct
8 Correct 3 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 3 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 420 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 4 ms 348 KB Output is correct
19 Execution timed out 1079 ms 5372 KB Time limit exceeded
20 Halted 0 ms 0 KB -