oj.uz

Submission #896279

# Submission time Handle Problem Language Result Execution time Memory
896279 2024-01-01T07:36:40 Z nightfal Wiring (IOI17_wiring) C++14
20 / 100
 1000 ms 8600 KB 
#include "wiring.h"
#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<m || j<n;) 
    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 > 7) 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> r, std::vector<int> b) {
  	if (isSubtask1(r,b)) return subtask1(r,b);
  	if (isSubtask2(r,b)) return subtask2(r,b,0,r.size()-1,0,b.size()-1);
    else if (isSubtask3(r,b)) return subtask3(r,b);
//     else if (isSubtask4(r,b)) return subtask4(r,b);
//     else return fullTask(r,b);
}
 
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];
}
 
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 subtask3(std::vector<int> r, std::vector<int> b) {
    int n = r.size()-1, m = b.size()-1;
    vector<pair<int,int>> a(n+m+1);
    
    for(int i=0, j=0; i<n || j<m;) {
        if (i==n) a[i+j] = make_pair(j++,1);
        else if (j==m) a[i+j] = make_pair(i++,0);
        else if (r[i]<b[j]) a[i+j] = make_pair(i++,0);
        else a[i+j] = make_pair(j++,1);
    }
    a[n+m] = make_pair(0,2);

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

    dp[curr] = a[0].second==0? subtask2(r,b,prev,curr-1,curr,curr):subtask2(b,r,prev,curr-1,curr,curr);
    int start = curr+1;
    for(int i=start; i<n+m+1; i++) {
        if (a[i].second != a[i-1].second) {prev = curr; curr = i;}
        for(int j =prev; j<curr; j++) {
            long long temp = a[prev].second==0? subtask2(r,b,prev,curr-1,curr,i):subtask2(b,r,0,curr-1,curr,i);
            if (dp[i]>temp) dp[i] = temp;            
        }
    }
    return dp[n+m-1];
}

Compilation message

wiring.cpp: In function 'long long int subtask1(std::vector<int>, std::vector<int>)':
wiring.cpp:40:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   40 |       for(int j=1; j<m; j++)
      |       ^~~
wiring.cpp:42:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   42 |  return dp[n-1][m-1];
      |  ^~~~~~
wiring.cpp: In function 'long long int subtask3(std::vector<int>, std::vector<int>)':
wiring.cpp:57:39: warning: operation on 'j' may be undefined [-Wsequence-point]
   57 |         if (i==n) a[i+j] = make_pair(j++,1);
      |                                      ~^~
wiring.cpp:58:44: warning: operation on 'i' may be undefined [-Wsequence-point]
   58 |         else if (j==m) a[i+j] = make_pair(i++,0);
      |                                           ~^~
wiring.cpp:59:49: warning: operation on 'i' may be undefined [-Wsequence-point]
   59 |         else if (r[i]<b[j]) a[i+j] = make_pair(i++,0);
      |                                                ~^~
wiring.cpp:60:34: warning: operation on 'j' may be undefined [-Wsequence-point]
   60 |         else a[i+j] = make_pair(j++,1);
      |                                 ~^~
wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:31:1: warning: control reaches end of non-void function [-Wreturn-type]
   31 | }
      | ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 13 ms 3616 KB Output is correct
4 Correct 15 ms 3568 KB Output is correct
5 Correct 13 ms 3620 KB Output is correct
6 Correct 25 ms 4648 KB Output is correct
7 Correct 17 ms 4628 KB Output is correct
8 Correct 17 ms 4616 KB Output is correct
9 Correct 17 ms 4700 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Runtime error 26 ms 8600 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Execution timed out 1022 ms 7848 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 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 13 ms 3616 KB Output is correct
20 Correct 15 ms 3568 KB Output is correct
21 Correct 13 ms 3620 KB Output is correct
22 Correct 25 ms 4648 KB Output is correct
23 Correct 17 ms 4628 KB Output is correct
24 Correct 17 ms 4616 KB Output is correct
25 Correct 17 ms 4700 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Runtime error 26 ms 8600 KB Execution killed with signal 11
29 Halted 0 ms 0 KB -