Compilare: main.cpp: In function 'void read()': main.cpp:25:11: warning: unused variable 'k' [-Wunused-variable] int x,k; ^ main.cpp: In function 'void solve()': main.cpp:141:23: warning: unused variable 'j' [-Wunused-variable] int scandura,pasi,j,k; ^ main.cpp:154:49: warning: iteration 4004 invokes undefined behavior [-Waggressive-loop-optimizations] for(int j=1;j<=NMAX;++j) c[j][k]=0; ~~~~~~~^~ main.cpp:154:30: note: within this loop for(int j=1;j<=NMAX;++j) c[j][k]=0; ~^~~~~~ main.cpp:149:45: warning: iteration 4004 invokes undefined behavior [-Waggressive-loop-optimizations] for(int j=1;j<=NMAX;++j) c[j][k]=0; ~~~~~~~^~ main.cpp:149:26: note: within this loop for(int j=1;j<=NMAX;++j) c[j][k]=0; ~^~~~~~ main.cpp:57:20: warning: iteration 4004 invokes undefined behavior [-Waggressive-loop-optimizations] c[i][1]=1; ~~~~~~~^~ main.cpp:55:18: note: within this loop for(int i=1;i<=NMAX;i++) ~^~~~~~