Codeforces 599A Patrick and Shopping

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cstdio>
#include <math.h>
#include <string>
#include <algorithm>

using namespace std;

int a, b, c;

int main() {
	scanf("%d %d %d", &a, &b, &c);
	int len1 = a + a + b + b;
	int len2 = a + c + c + a;
	int len4 = b + c + c + b;
	int len3 = a + b + c;
	printf("%d\n", min(min(min(len1, len2), len3), len4));
	return 0;
}