Submission #583945

#	Time	Username	Problem	Language	Result	Execution time	Memory
583945		20160161simone	Seats (IOI18_seats)	C++14	11 / 100	4041 ms	48556 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=1e6+10;
ll r[N],c[N],h,w;
void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    for(ll i=0;i<H*W;i++) r[i]=R[i],c[i]=C[i];
    h=H,w=W;
}

int swap_seats(int a, int b) {
    swap(r[a],r[b]),swap(c[a],c[b]);
    ll ans=1,a1=c[0],a2=c[0],b1=r[0],b2=r[0];
    for(ll i=1;i<h*w;i++){
        a1=min(a1,c[i]),a2=max(a2,c[i]);
        b1=min(b1,r[i]),b2=max(b2,r[i]);
        if( (a2-a1+1)*(b2-b1+1)==i+1 ) ans++;
    }
    return ans;
}

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