#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
extern int getchar_unlocked(void);
extern int putchar_unlocked(int);
#define DEBUG3

#define NOP do{}while(0)
#define gc(d)	(d)=getchar_unlocked()
#define	pc(d) putchar_unlocked(d)
#define PRINCR pc('\n')
#ifdef DEBUG
#include <time.h>
#define TRACE(...) do{fprintf(stderr,__VA_ARGS__);}while(0)
#define TRACECR do{fprintf(stderr,"\n");}while(0)
static clock_t	startclock;
void DEBUGSTART(void){TRACE("--DEBUG MODE --\n");startclock=clock();}
void DEBUGEND(void){startclock=clock()-startclock;TRACE("--finish --\ntime is %.3fms\n",startclock/1000.);}
#else
#define TRACE(...) NOP
#define TRACECR NOP
void DEBUGSTART(void){return;}
void DEBUGEND(void){return;}
#endif

#define NOCR(strig) do{char *p;p=strchr(strig,'\n');if(p)*p='\0';}while(0)
#define SWAP(type,a,b) do{type _c;_c=a;a=b;b=_c;}while(0)
#define MAX(a,b)	((a)>(b)?(a):(b))
#define MIN(a,b)	((a)<(b)?(a):(b))
#define MID(a,b,c) ((a)>(b)?(b)>(c)?(b):(a)>(c)?(c):(a):(c)>(b)?(b):(c)>(a)?(c):(a))
#define REP(a,b) for(int a=0;a<(int)(b);++a)
#define REP1(a,b) for(int a=1;a<=(int)(b);++a)
static char *GETWORD(char* str) {char c;char *cp;cp=&str[0];gc(c);while(c!=EOF){if((c==' ')||(c=='\n'))break;*cp++=c;gc(c);}*cp='\0';return &str[0];}
#define GETLINE(str) do{char *p;fgets(str,sizeof(str),stdin);p=strchr(str,'\n');if(p)*p='\0';}while(0)
#define mygc(c) (c)=getchar()
static void read1(int *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);}
static void read2(int *x, int *y){read1(x);read1(y);}
#define INPUT(str) do{char *p;fgets(str,sizeof(str),stdin);p=strchr(str,'\n');if(p)*p='\0';}while(0)
#define REP(a,b) for(int a=0;a<(int)(b);++a)
#define lolong long long
static int GETLINEINT(void) {char s[34];GETLINE(s);return atoi(s);}
static int GETWORDINT(void) {char s[34];GETWORD(s);return atoi(s);}
static long GETLINELONG(void) {char s[34];GETLINE(s);return atol(s);}
static int cmpint123(const void *a,const void *b){if(*(int *)a>*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
static int cmpint321(const void *a,const void *b){if(*(int *)a<*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
#define ll	long long
#define	ull	unsigned ll
#define	ui	unsigned int
ll midl(ll a, ll b, ll c )
{
	if( a>b ) {
		if( b > c ) return b;
		else if( a > c ) return c; else return a;
	} else {
		if( c > b ) return b;
		else if( b > a ) return c; else return a;
	}
}

// *********************
// *********************
int main( void ) {
	ll N,A,B,C;
	ll	md,mx,mn;
	char	str[12*3+2];
	// read
	N = GETLINELONG();
	A = GETLINELONG();
	{
		char c;
		char *cp;
		cp=&str[0];
		gc(c);
		if( c == EOF ) {
			printf("\"assert\"\n");
			return 0;
		}
		while(c!=EOF) {
			if((c==' ')||(c=='\n'))break;
			*cp++=c;
			gc(c);
		}
		*cp='\0';
	}
	sscanf(str,"%lld",&B);
	C = GETLINELONG();
	TRACE("N %ld\n",N);
	TRACE("A %ld\n",A);
	TRACE("B %ld\n",B);
	TRACE("C %ld\n",C);

	DEBUGSTART();
	mx = MAX(A+B,MAX(A+C,B+C));
	md = midl(A+B,A+C,B+C);
	mn = MIN(A+B,MIN(A+C,B+C));
	TRACE("mx %ld\n",mx);
	TRACE("md %ld\n",md);
	TRACE("mn %ld\n",mn);
	if( mx == md ) {
		printf("%ld\n", mn );
	} else {
		printf("%ld\n", md );
	}
	DEBUGEND();
}