Submission #403385

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
403385	2021-05-13 06:27:13	Magnam_Caritatem	Swapping Cities (APIO20_swap)	C++17	100 / 100	408 ms	36376 KiB

swap

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/*
  Task  : swap
  Author  : Phumipat C. [MAGCARI]
  Language: C++
  Created : 13 May 2021 [12:22]
  Algo  : 
  Status  : 
*/
#include<bits/stdc++.h>
#include "swap.h"
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x),end(x)
#define allst(x,y) (x).begin()+y,(x).end()
#define rmdup(x) (x).resize(unique((x).begin(),(x).end())-(x).begin())
#define sz(x) (int)(x).size()
#define decp(x) fixed << setprecision(x)
#define MOD (LL )(1e9+7)
using namespace std;
using LL = long long;
using PII = pair<int ,int >;
using PLL = pair<long long ,long long >;
const int dir4[2][4] = {{1,-1,0,0},{0,0,1,-1}};
const int dir8[2][8] = {{-1,-1,-1,0,1,1,1,0},{-1,0,1,1,-1,0,1,-1}};
LL modN(LL a,LL b,LL c = MOD){
  if(b == 0)  return 1;
  if(b == 1)  return a%c;
  LL now = modN(a,b/2,c);
  if(b&1) return (((now*now)%c)*(a%c))%c;
  else  return (now*now)%c;
}
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 17 / 17
• Subtask 4: 20 / 20
• Subtask 5: 23 / 23
• Subtask 6: 27 / 27