Submission #1291920

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291920		LmaoLmao	Aliens (IOI16_aliens)	C++20	Compilation error	0 ms	0 KiB

aliens

#include <bits/stdc++.h>
#define fi first
#define se second
#define name "a"
#define int long long
using namespace std;

using ii = pair<int,long long>;
using aa = array<int,3>;
using ll = long long;
const int N=1e6+5;
const int MOD=1e9+7;

int rmq[20][N];
ii dp[N];
int a[N];
int b[N];

int get(int l,int r) {
    int x=__lg(r-l+1);
    return max(rmq[x][l],rmq[x][r-(1<<x)+1]);
}

vector<ii> v;

bool cmp(aa a,aa b,int cur) {
    if(a[0]*cur+a[1]!=b[0]*cur+b[1]) {
        return a[0]*cur+a[1]<b[0]*cur+b[1];
    } else
    return a[2]<b[2];
}


void alien(int delta) {
    deque<aa> q;
    q.push_back({v[1].fi*2,0,0});
    for(int i=1;i<v.size();i++) {
        while(q.size()>1 && !cmp(q[0],q[1],v[i].se)) {
            q.pop_front();
        }
        dp[i].fi=q[0][0]*v[i].se+q[0][1]+v[i].se*v[i].se;
        dp[i].se=q[0][2]+1;
        if(i<v.size()-1) {
            aa cur={v[i+1].fi*2,dp[i].fi+v[i+1].fi*v[i+1].fi+delta,dp[i].se};
            q.push_back(cur);
            //cout << cur[0] << ' ' << cur[1] << endl;
        }
        //cout << dp[i].fi << endl;
    }
    return;
}

int	take_photos(int	m,	int	n,	int	k,	int[]	R,	int[]	C)
    for(int i=0;i<m;i++) {
        int x=R[i+1],y=C[i+1];
        if(x<y) {
            a[y]=max(a[y],y-x+1);
        }
        else {
            a[x]=max(a[x],x-y+1);
        }
    }
    int tmp=-1e18;
    for(int i=n;i>0;i--) {
        if(a[i]-i<=tmp) a[i]=0;
        tmp=max(tmp,a[i]-i);
        b[i]=a[i];
    }
    v.push_back({0,0});
    for(int i=1;i<=n;i++) {
        if(a[i]) v.push_back({a[i]-i,i});
    }
    int l=0,r=n*n;
    int ans=0;
    while(l<=r) {
        int mid = l + r >> 1;
        alien(mid);
        if(dp[v.size()-1].se<=k) {
            ans=mid;
            r=mid-1;
        }
        else {
            l=mid+1;
        }
    }
    int skibidi=0;
    for(int i=1;i<v.size();i++) {
        if(v[i].se-a[v[i].se]<v[i-1].se) {
            int tmp=v[i-1].se-(v[i].se-a[v[i].se]);
            skibidi+=tmp*tmp;
        }
    }
    alien(ans);
    if(ans==0) {
        cout << dp[v.size()-1].fi-skibidi;
    }
    else {
        cout << dp[v.size()-1].fi+ans*k-skibidi;
    }
    return 0;
}

Compilation message (stderr)

aliens.cpp:53:73: error: expected ',' or '...' before 'R'
   53 | int     take_photos(int m,      int     n,      int     k,      int[]   R,      int[]   C)
      |                                                                         ^
aliens.cpp:54:5: error: expected initializer before 'for'
   54 |     for(int i=0;i<m;i++) {
      |     ^~~
aliens.cpp:54:19: error: 'm' was not declared in this scope
   54 |     for(int i=0;i<m;i++) {
      |                   ^
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:19: error: 'm' was not declared in this scope
aliens.cpp:54:17: error: 'i' does not name a type; did you mean 'ii'?
   54 |     for(int i=0;i<m;i++) {
      |                 ^
      |                 ii
aliens.cpp:54:21: error: 'i' does not name a type; did you mean 'ii'?
   54 |     for(int i=0;i<m;i++) {
      |                     ^
      |                     ii
aliens.cpp:64:5: error: expected unqualified-id before 'for'
   64 |     for(int i=n;i>0;i--) {
      |     ^~~
aliens.cpp:64:17: error: 'i' does not name a type; did you mean 'ii'?
   64 |     for(int i=n;i>0;i--) {
      |                 ^
      |                 ii
aliens.cpp:64:21: error: 'i' does not name a type; did you mean 'ii'?
   64 |     for(int i=n;i>0;i--) {
      |                     ^
      |                     ii
aliens.cpp:69:5: error: 'v' does not name a type
   69 |     v.push_back({0,0});
      |     ^
aliens.cpp:69:22: error: expected unqualified-id before ')' token
   69 |     v.push_back({0,0});
      |                      ^
aliens.cpp:70:5: error: expected unqualified-id before 'for'
   70 |     for(int i=1;i<=n;i++) {
      |     ^~~
aliens.cpp:70:17: error: 'i' does not name a type; did you mean 'ii'?
   70 |     for(int i=1;i<=n;i++) {
      |                 ^
      |                 ii
aliens.cpp:70:22: error: 'i' does not name a type; did you mean 'ii'?
   70 |     for(int i=1;i<=n;i++) {
      |                      ^
      |                      ii
aliens.cpp:73:15: error: 'n' was not declared in this scope
   73 |     int l=0,r=n*n;
      |               ^
aliens.cpp:73:17: error: 'n' was not declared in this scope
   73 |     int l=0,r=n*n;
      |                 ^
aliens.cpp:75:5: error: expected unqualified-id before 'while'
   75 |     while(l<=r) {
      |     ^~~~~
aliens.cpp:87:5: error: expected unqualified-id before 'for'
   87 |     for(int i=1;i<v.size();i++) {
      |     ^~~
aliens.cpp:87:17: error: 'i' does not name a type; did you mean 'ii'?
   87 |     for(int i=1;i<v.size();i++) {
      |                 ^
      |                 ii
aliens.cpp:87:28: error: 'i' does not name a type; did you mean 'ii'?
   87 |     for(int i=1;i<v.size();i++) {
      |                            ^
      |                            ii
aliens.cpp:93:10: error: expected constructor, destructor, or type conversion before '(' token
   93 |     alien(ans);
      |          ^
aliens.cpp:94:5: error: expected unqualified-id before 'if'
   94 |     if(ans==0) {
      |     ^~
aliens.cpp:97:5: error: expected unqualified-id before 'else'
   97 |     else {
      |     ^~~~
aliens.cpp:100:5: error: expected unqualified-id before 'return'
  100 |     return 0;
      |     ^~~~~~
aliens.cpp:101:1: error: expected declaration before '}' token
  101 | }
      | ^
aliens.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
aliens_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~