Compilare: main.cpp: In function 'int main()': main.cpp:9:38: warning: unused variable 'j1' [-Wunused-variable] int n,i,minn=1000005,maxx=0,j,i1,j1,i2,j2,i3,j3; ^~ main.cpp:9:44: warning: unused variable 'j2' [-Wunused-variable] int n,i,minn=1000005,maxx=0,j,i1,j1,i2,j2,i3,j3; ^~ main.cpp:9:50: warning: unused variable 'j3' [-Wunused-variable] int n,i,minn=1000005,maxx=0,j,i1,j1,i2,j2,i3,j3; ^~ main.cpp:7:45: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("colorfulconflict.in","r",stdin); ^ main.cpp:8:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("colorfulconflict.out","w",stdout); ^ main.cpp:10:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:15:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i][j]); ^