Submission #85065

#	Time	Username	Problem	Language	Result	Execution time	Memory
85065		tjdgus4384	화살표 그리기 (KOI18_arrowH)	C++14	100 / 100	50 ms	16324 KiB

arrow

#include<cstdio>
#include<vector>
#include<algorithm>
using namespace std;
vector<int> v[100001];

int main()
{
    int x, n, c;
    long long ans = 0;
    scanf("%d", &n);
    for(int i = 0;i < n;i++)
    {
        scanf("%d %d", &x, &c);
        v[c].push_back(x);
    }
    for(int i = 1;i <= n;i++)
    {
        if(v[i].size() <= 1) continue;
        sort(v[i].begin(), v[i].end());
        ans += v[i][1] - v[i][0];
        for(int j = 1;j < v[i].size() - 1;j++)
        {
            ans += min(v[i][j] - v[i][j - 1], v[i][j + 1] - v[i][j]);
        }
        ans += v[i][v[i].size() - 1] - v[i][v[i].size() - 2];
    }
    printf("%lld", ans);
    return 0;
}

Compilation message (stderr)

arrow.cpp: In function 'int main()':
arrow.cpp:22:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 1;j < v[i].size() - 1;j++)
                       ~~^~~~~~~~~~~~~~~~~
arrow.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
arrow.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &x, &c);
         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 12 / 12
• Subtask 3: 29 / 29
• Subtask 4: 38 / 38