제출 #171148

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
171148		Nodir_Bobiev	Stove (JOI18_stove)	C++14	0 / 100	5 ms	632 KiB

stove

# include <bits/stdc++.h>
# define FILE
using namespace std;

int main(){

    # ifdef FILE
        freopen( "input.txt", "r", stdin );
        freopen( "output.txt", "w", stdout );
    # endif
    ios_base::sync_with_stdio( false );
    int n, k;
    cin >> n >> k;
    vector < int > times;
    for( int i = 0; i < n;i ++ ){
    	int tt;
    	cin >> tt;
    	times.push_back( tt );
    }
    int ans = times.back()-times[0]+1;
    vector < int > diff;
    for( int i = 0; i < n-1; i ++ ){
    	diff.push_back( times[i+1]-times[i]-1 );
    }

    sort( diff.rbegin(), diff.rend() );
    for( int i = 0; i < k -1; i ++ )
    	ans -= diff[i];
    cout << ans;

    return 0;
}	

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'int main()':
stove.cpp:8:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen( "input.txt", "r", stdin );
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:9:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen( "output.txt", "w", stdout );
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50