#include <bits/stdc++.h>
#define x first
#define t second
using namespace std;
typedef pair<long long, long long> ii;
long long inf = (1LL << 48LL);
vector<ii> arr = {ii({0,0})};
static long long memo[205][205][205];
long long n, L;
long long dp(int pos, int bound, int taken){
if(memo[pos][bound][taken] != -1) return memo[pos][bound][taken];
//cout << pos << " " << bound << " " << taken << endl;
long long ans = inf;
if(pos == bound){
if(pos == 0 && taken == 0) return 0;
else return inf;
}
if(taken < 0) return inf;
if(pos == 0) return inf;
int pos2;
long long dPos, dCross;
if(pos < bound || bound == 0){
pos2 = pos-1;
if(pos2 == -1) pos2 = n;
}
else{
pos2 = pos+1;
if(pos2 == n+1) pos2 = 0;
}
if(pos > pos2) dPos = arr[pos].x - arr[pos2].x;
else dPos = arr[pos2].x - arr[pos].x;
///move from bound to pos
if(bound > pos){
dCross = L - (arr[bound].x - arr[pos].x);
}
else{
dCross = L - (arr[pos].x - arr[bound].x);
}
assert(dPos >= 0);
assert(dCross >= 0);
if(pos == 1 && bound == 0){
//cout << pos << " " << bound << " " << pos2 << " " << dPos << " " << dCross << "\n";
}
ans = min(ans, dp(pos2, bound, taken) + dPos);
ans = min(ans, dp(bound, pos2, taken) + dCross);
if(dp(pos2, bound, taken - 1) + dPos <= arr[pos].t){
ans = min(dp(pos2, bound, taken - 1) + dPos, ans);
}
if(dp(bound, pos2, taken - 1) + dCross <= arr[pos].t){
ans = min(dp(bound, pos2, taken - 1) + dCross, ans);
}
memo[pos][bound][taken] = ans;
return ans;
}
int //main(){
freopen("i.txt","r",stdin);
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> L;
for(int i = 0;i < n;i++){
arr.push_back(ii(0,0));
}
for(int i = 1;i <= n;i++) cin >> arr[i].x;
for(int i = 1;i <= n;i++) cin >> arr[i].t;
for(int i = 0;i <= n;i++){
for(int j = 0;j <= n;j++){
for(int k = 0;k <= n;k++){
memo[i][j][k] = -1;
}
}
}
long long ANS = 0;
for(long long taken = 0;taken <= n;taken++){
for(int i = 0;i <= n;i++){
for(int j = 0;j <= n;j++){
long long DP = dp(i,j,taken);
if(DP < inf){
ANS = max(ANS, taken);
}
}
}
}
cout << ANS;
//cout << dp(1,0,1);
}
Compilation message
ho_t3.cpp:72:9: error: 'int freopen' redeclared as different kind of symbol
freopen("i.txt","r",stdin);
^
In file included from /usr/include/c++/7/cstdio:42:0,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:46,
from ho_t3.cpp:1:
/usr/include/stdio.h:278:14: note: previous declaration 'FILE* freopen(const char*, const char*, FILE*)'
extern FILE *freopen (const char *__restrict __filename,
^~~~~~~
ho_t3.cpp:73:27: error: expected constructor, destructor, or type conversion before '(' token
ios_base::sync_with_stdio(false);
^
ho_t3.cpp:74:2: error: 'cin' does not name a type; did you mean 'sin'?
cin.tie(0);
^~~
sin
ho_t3.cpp:76:2: error: 'cin' does not name a type; did you mean 'sin'?
cin >> n >> L;
^~~
sin
ho_t3.cpp:78:2: error: expected unqualified-id before 'for'
for(int i = 0;i < n;i++){
^~~
ho_t3.cpp:78:16: error: 'i' does not name a type
for(int i = 0;i < n;i++){
^
ho_t3.cpp:78:22: error: 'i' does not name a type
for(int i = 0;i < n;i++){
^
ho_t3.cpp:82:2: error: expected unqualified-id before 'for'
for(int i = 1;i <= n;i++) cin >> arr[i].x;
^~~
ho_t3.cpp:82:16: error: 'i' does not name a type
for(int i = 1;i <= n;i++) cin >> arr[i].x;
^
ho_t3.cpp:82:23: error: 'i' does not name a type
for(int i = 1;i <= n;i++) cin >> arr[i].x;
^
ho_t3.cpp:83:2: error: expected unqualified-id before 'for'
for(int i = 1;i <= n;i++) cin >> arr[i].t;
^~~
ho_t3.cpp:83:16: error: 'i' does not name a type
for(int i = 1;i <= n;i++) cin >> arr[i].t;
^
ho_t3.cpp:83:23: error: 'i' does not name a type
for(int i = 1;i <= n;i++) cin >> arr[i].t;
^
ho_t3.cpp:85:2: error: expected unqualified-id before 'for'
for(int i = 0;i <= n;i++){
^~~
ho_t3.cpp:85:16: error: 'i' does not name a type
for(int i = 0;i <= n;i++){
^
ho_t3.cpp:85:23: error: 'i' does not name a type
for(int i = 0;i <= n;i++){
^
ho_t3.cpp:95:2: error: expected unqualified-id before 'for'
for(long long taken = 0;taken <= n;taken++){
^~~
ho_t3.cpp:95:26: error: 'taken' does not name a type; did you mean 'tan'?
for(long long taken = 0;taken <= n;taken++){
^~~~~
tan
ho_t3.cpp:95:37: error: 'taken' does not name a type; did you mean 'tan'?
for(long long taken = 0;taken <= n;taken++){
^~~~~
tan
ho_t3.cpp:106:2: error: 'cout' does not name a type; did you mean 'cosl'?
cout << ANS;
^~~~
cosl
ho_t3.cpp:111:1: error: expected declaration before '}' token
}
^
