Compilare: user.cpp: In function ‘int main()’: user.cpp:90:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q=0;q<places[0].size();q++){ ^ user.cpp:104:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(q=0;q<places[k].size();q++){ ^ user.cpp:107:35: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(check(i,j-1)==1&&cells[i][j-1]==0||cells[i][j-1]==k) ^ user.cpp:109:35: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(check(i,j+1)==1&&cells[i][j+1]==0||cells[i][j+1]==k) ^ user.cpp:111:35: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(check(i-1,j)==1&&cells[i-1][j]==0||cells[i-1][j]==k) ^ user.cpp:113:35: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(check(i+1,j)==1&&cells[i+1][j]==0||cells[i+1][j]==k) ^ user.cpp:71:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("unlock.in","r",stdin); ^ user.cpp:72:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("unlock.out","w",stdout); ^ user.cpp:74:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&tests); ^ user.cpp:76:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&colors); ^ user.cpp:79:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&cells[i][j]); ^