Created
September 1, 2015 16:59
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yukicoder No.247
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#include <iostream> | |
#include <iomanip> | |
#include <vector> | |
#include <algorithm> | |
#include <numeric> | |
#include <functional> | |
#include <cmath> | |
#include <queue> | |
#include <stack> | |
#define repd(i,a,b) for (int i=(a);i<(b);i++) | |
#define rep(i,n) repd(i,0,n) | |
typedef long long ll; | |
using namespace std; | |
int inputValue(){ | |
int a; | |
cin >> a; | |
return a; | |
}; | |
void inputArray(int * p, int a){ | |
rep(i, a){ | |
cin >> p[i]; | |
} | |
}; | |
void inputVector(vector<int> * p, int a){ | |
rep(i, a){ | |
int input; | |
cin >> input; | |
p -> push_back(input); | |
} | |
} | |
template <typename T> | |
void output(T a, int precision) { | |
if(precision > 0){ | |
cout << setprecision(precision) << a << "\n"; | |
} | |
else{ | |
cout << a << "\n"; | |
} | |
} | |
int dp[1000000] = {-1}; | |
int main(int argc, const char * argv[]) { | |
// source code | |
int C = inputValue(); | |
int N = inputValue(); | |
vector<int> a; | |
rep(i, N){ | |
a.push_back(inputValue()); | |
} | |
dp[0] = 0; | |
repd(i, 1, C + 1){ | |
int m = 10000000; | |
rep(j, N){ | |
if (i >= a[j]) { | |
m = min(m, dp[i - a[j]] + 1); | |
} | |
} | |
dp[i] = m; | |
} | |
output((dp[C] == 10000000) ? -1 : dp[C], 0); | |
return 0; | |
} |
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