제출 #98844

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
98844		bogdan10bos	Coin Collecting (JOI19_ho_t4)	C++14	0 / 100	2 ms	384 KiB

joi2019_ho_t4

#include <bits/stdc++.h>

using namespace std;

//#define FILE_IO

typedef long long LL;

int N;
int cnt[100005][3];

int main()
{
    #ifdef FILE_IO
    freopen("1.in", "r", stdin);
    freopen("1.out", "w", stdout);
    #endif

    LL ans = 0;
    scanf("%d", &N);
    for(int i = 1; i <= 2 * N; i++)
    {
        int x, y, nx, ny;
        scanf("%d%d", &x, &y);

        if(y <= 1)  ny = 1;
        else    ny = 2;

        if(1 <= x && x <= N)    nx = x;
        else if(x < 1)  nx = 1;
        else    nx = N;

        cnt[nx][ny]++;
        ans += 1LL * abs(nx - x) + 1LL * abs(ny - y);
    }

    int lst = 0, up = 0, down = 0;
    for(int i = 1; i <= N; i++)
    {
        lst += cnt[i][1] + cnt[i][2];
        up += cnt[i][2];
        down += cnt[i][1];
        ans += abs(lst - (2 * i));
    }
    ans += abs(up - N);

    printf("%lld\n", ans);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
joi2019_ho_t4.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &x, &y);
         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63