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Main1149.java
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Main1149.java
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class Main1149 {
public static void main(String[] args) throws NumberFormatException, IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
StringTokenizer st;
int[][] rgb = new int[N][3];
for(int i=0;i<N;i++) {
st = new StringTokenizer(br.readLine());
for(int j=0;j<3;j++) {
rgb[i][j] = Integer.parseInt(st.nextToken());
}
if(i!=0) {
for(int j=0;j<3;j++) {
int min = Integer.MAX_VALUE;
for(int k=0;k<3;k++) {
if(j!=k) {
min = min<rgb[i-1][k]?min:rgb[i-1][k];
}
}
rgb[i][j] += min;
}
}
}
int result = Integer.MAX_VALUE;
for(int i=0;i<3;i++) {
result = result<rgb[N-1][i]?result:rgb[N-1][i];
}
System.out.println(result);
}
}