Submission #220148

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
220148	2020-04-07 07:02:04	kshitij_sodani	Tents (JOI18_tents)	C++17	100 / 100	211 ms	70776 KiB

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#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cstdio>
using namespace std;
#define pb push_back
#define a first
#define b second
typedef long long int llo;
llo mod=1000000007;
int main(){
  llo n,m;
  cin>>n>>m;
  llo dp[n][m];
  dp[0][0]=5;
  for(llo i=1;i<n;i++){
    dp[i][0]=4*(i+1)+((i+1)*i)/2;
    dp[i][0]+=1;
    dp[i][0]%=mod;
  }
  for(llo j=1;j<m;j++){
    dp[0][j]=4*(j+1)+((j+1)*j)/2;
    dp[0][j]+=1;
    dp[0][j]%=mod;
  }
  for(llo i=1;i<n;i++){
    for(llo j=1;j<m;j++){
      dp[i][j]=4*(j+1)*dp[i-1][j-1];
 
 
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• Subtask 1: 48 / 48
• Subtask 2: 52 / 52