Submission #72983

#	Time	Username	Problem	Language	Result	Execution time	Memory
72983		garyye	Stove (JOI18_stove)	C++14	100 / 100	39 ms	1532 KiB

stove

// author: gary
// created: 2018/08/27 12:55:13
#include <cassert>
#include <cctype>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <limits>
#include <utility>
#include <functional>
#include <string>
#include <bitset>
#include <deque>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#include <algorithm>
#include <iostream>
#include <sstream>
using namespace std;
#define SZ(x) ( (int) (x).size() )
#define ALL(c) (c).begin(), (c).end()
#define CNT(c, x) ((c).find(x) != (c).end())
typedef pair<int, int> pii;
typedef long long ll;
template<class T> bool cmax(T& a, T b) { if(a < b) { a = b; return true; } return false; }
template<class T> bool cmin(T& a, T b) { if(a > b) { a = b; return true; } return false; }

const int N = 1e5 + 10;

int t[N];
int a[N];
int n, k;

int main() {
  while(scanf("%d%d", &n, &k) != EOF) {
    for(int i = 0; i < n; i++) {
      scanf("%d", t + i);
      if(i > 0) {
        a[i - 1] = t[i] - t[i - 1] - 1;
      }
    }
    sort(a, a + n - 1);
    reverse(a, a + n - 1);
    int ans = t[n - 1] + 1 - t[0];

    for(int i = 0; i < k - 1; i++) {
      ans -= a[i];
    }

    printf("%d\n", ans);
  }

  return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:44:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d", t + i);
       ~~~~~^~~~~~~~~~~~~

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