Compilare: main.cpp: In function 'void READ()': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=m;j++) ~^~~ main.cpp: In function 'bool IN_MAT(int, int)': main.cpp:24:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return(x>=1&&x<=n&&y>=1&&y<=m); ~^~~ main.cpp:24:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return(x>=1&&x<=n&&y>=1&&y<=m); ~^~~ main.cpp: In function 'void FILL(int, int)': main.cpp:36:61: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[is+dx[i]][js+dy[i]]>0&&A[is+dx[i]][js+dy[i]]<h&&IN_MAT(is+dx[i],js+dy[i])) ~~~~~~~~~~~~~~~~~~~~~^~ main.cpp: In function 'int main()': main.cpp:49:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:51:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=m;j++) ~^~~ main.cpp:55:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[i][j-1]>0&&A[i][j-1]<h&&IN_MAT(i,j-1)) ~~~~~~~~~^~ main.cpp:57:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[i][j+1]>0&&A[i][j+1]<h&&IN_MAT(i,j+1)) ~~~~~~~~~^~ main.cpp:59:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[i-1][j]>0&&A[i-1][j]<h&&IN_MAT(i-1,j)) ~~~~~~~~~^~ main.cpp:61:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[i+1][j]>0&&A[i+1][j]<h&&IN_MAT(i+1,j)) ~~~~~~~~~^~ main.cpp:67:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:69:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=m;j++) ~^~~