| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 896953 |
2024-01-02T11:25:28 Z |
nightfal |
Wiring (IOI17_wiring) |
C++14 |
|
1 ms |
364 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) dp[i] = temp;
else temp += min(dp[j-1],dp[j]);
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:107:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
107 | for(int j=1; j<m; j++)
| ^~~
wiring.cpp:110:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
110 | return dp[n-1][m-1];
| ^~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
3rd lines differ - on the 1st token, expected: '25859', found: '-9223372036854753981' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
364 KB |
3rd lines differ - on the 1st token, expected: '904', found: '-9223372036854775483' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
3rd lines differ - on the 1st token, expected: '316', found: '-9223372036854775621' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
3rd lines differ - on the 1st token, expected: '27', found: '-9223372036854775790' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
3rd lines differ - on the 1st token, expected: '25859', found: '-9223372036854753981' |
| 2 |
Halted |
0 ms |
0 KB |
- |
