Submission #415242

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
415242	2021-05-31 17:59:32	keta_tsimakuridze	Group Photo (JOI21_ho_t3)	C++14	100 / 100	842 ms	509324 KiB

Main

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#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=5005,mod=1e9+7,Inf=1e9;
int t,ind[N],dp[N],inv[N][N],p[N][N],n,a[N],I[N][N];
string s;
 main(){
  // t=1;
  cin >> n;
  for(int i=1;i<=n;i++){
    cin>>a[i];
    ind[a[i]] = i;
  }
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++) {
      inv[i][j] = inv[i][j-1] + (ind[j]>ind[i]);
      p[i][j] = p[i-1][j] + inv[i][j];
    } 
  }    
  for(int i=1;i<=n;i++) {
    dp[i] = Inf;
    for(int j=i;j<=n;j++){
      I[i][j] = I[i][j-1] + (j-i) - (inv[j][j] - inv[j][i-1]); 
      
    }
  }
  for(int i=1;i<=n;i++) {
    for(int j=i;j<=n;j++) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

Main.cpp:9:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 |  main(){
      |  ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 32 / 32
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36