#include<bits/stdc++.h> using namespace std; int main { int a[4][4]={1,2,-3,-4,0,-12,-13,14,-21,23,0,-24,-31,32,-33,0} int i,j,s=0; for(i=1;i<4;i++) for(j=0;j<4;j++) { if (a[i][j]<0) continue; if (a[i][j]==0) break; s+=a[i][j]; } cout<<s<<endl; return 0; }