Submission #1213042

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Source Code Expand

#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
using namespace std;

int n;
int k;

vector<long long int> v;

int cn(int num){
	int r = 0;
	while (num){
		if ((num & 1)){
			r++;
		}
		num >>= 1;
	}
	return r;
}
int main(){
	cin >> n >> k;
	for (int i = 0; i < n; i++){
		int a;
		scanf("%d", &a);
		v.push_back(a);
	}
	long long int ans = LLONG_MAX;
	for (int i = 0; i < (1 << n); i++){
		int val = cn(i);
		if (val != k)continue;
		long long int mx = LLONG_MIN;
		long long int cost = 0;
		for (int j = 0; j < n; j++){
			if ((i >> j) & 1){
				if(mx>=v[j])cost += max(0LL, mx + 1LL - v[j]);
				mx++;
			}
			mx = max(mx, v[j]);
		}
		ans = min(ans, cost);
	}
	printf("%lld\n", ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a);
                  ^

Judge Result