Submission #770277

#	Time	Username	Problem	Language	Result	Execution time	Memory
770277		boyliguanhan	Seats (IOI18_seats)	C++17	11 / 100	4073 ms	24120 KiB

seats

#include "seats.h"
#pragma GCC optimize(2)
#include<bits/stdc++.h>
using namespace std;
vector<int> x, y;
void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    x=R,y=C;
}
int swap_seats(int a, int b) {
    int ans = 0;
    swap(x[a],x[b]);
    swap(y[a],y[b]);
    int A=1e7,B=0,C=1e7,D=0;
    for(int i = 0; i < x.size(); i++) {
        A = min(A,x[i]);
        B = max(B,x[i]);
        C = min(C,y[i]);
        D = max(D,y[i]);
        int dis = (B-A+1)*(D-C+1);
        if(dis==i+1)
            ans++;
    }
    return ans;
}

Compilation message (stderr)

seats.cpp: In function 'int swap_seats(int, int)':
seats.cpp:14:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for(int i = 0; i < x.size(); i++) {
      |                    ~~^~~~~~~~~~

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