Compilare: main.cpp: In function 'long long int caut(int, int)': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(mx[i][mid]<=k) { ~~~~~~~~~~^~~ main.cpp: In function 'bool verif(int)': main.cpp:28:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:32:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=r and i<=k; i++) ~^~~ main.cpp:34:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return (t>=c); ~^~~ main.cpp: In function 'int main()': main.cpp:41:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=m; i++) ~^~~ main.cpp:44:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<=n; i++) ~^~~ main.cpp:47:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<=n; i++) ~^~~ main.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=2; j<=m; j++) ~^~~ main.cpp:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:52:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=m;j++) { ~^~~