Submission #736445

#	Time	Username	Problem	Language	Result	Execution time	Memory
736445		myrcella	Seats (IOI18_seats)	C++17	11 / 100	1403 ms	49772 KiB

seats

//by szh
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 0x3f
#define rep(i,a,b) for (int i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define ll long long
#define mod 1000000007
#define ALL(x) x.begin(),x.end()
void inc(int &a,int b) {a=(a+b)%mod;}
void dec(int &a,int b) {a=(a-b+mod)%mod;}
int lowbit(int x) {return x&(-x);}
ll p0w(ll base,ll p) {ll ret=1;while(p>0){if (p%2ll==1ll) ret=ret*base%mod;base=base*base%mod;p/=2ll;}return ret;}

namespace {

int read_int() {
  int x;
  if (scanf("%d", &x) != 1) {
    fprintf(stderr, "Error while reading input\n");
    exit(1);
  }
  return x;
}

}  // namespace

#include "seats.h"
const int maxn = 1e4+10;
pii pos[maxn];
int n;

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
  rep(i,0,H*W) pos[i] = {R[i],C[i]};
  n = H*W;
}

int swap_seats(int a, int b) {
  swap(pos[a],pos[b]);
  int ret = 1;
  int minx = pos[0].fi, maxx = pos[0].fi, miny = pos[0].se, maxy = miny;
  rep(i,1,n) {
	  minx = min(minx,pos[i].fi);
	  maxx = max(maxx,pos[i].fi);
	  miny = min(miny,pos[i].se);
	  maxy = max(maxy,pos[i].se);
	  if ((maxx-minx+1) * (maxy-miny+1) == i+1) ret++;
  }
  return ret;
}

Compilation message (stderr)

seats.cpp:26:5: warning: 'int {anonymous}::read_int()' defined but not used [-Wunused-function]
   26 | int read_int() {
      |     ^~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 6 / 6
• Subtask 3: 0 / 20
• Subtask 4: 0 / 6
• Subtask 5: 0 / 33
• Subtask 6: 0 / 30