Compilare: main.cpp: In function 'void del(int)': main.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(i)<heap.size()&&fiu_st(i)>=heap.size()) ~~~~~~~~~^~~~~~~~~~~~ main.cpp:45:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(i)<heap.size()&&fiu_st(i)>=heap.size()) ~~~~~~~~~^~~~~~~~~~~~~ main.cpp:48:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(fiu_st(i))>=heap.size()&&fiu_dr(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:48:65: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(fiu_st(i))>=heap.size()&&fiu_dr(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:58:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(fiu_st(i)<heap.size()&&fiu_dr(i)>=heap.size()) ~~~~~~~~~^~~~~~~~~~~~ main.cpp:58:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(fiu_st(i)<heap.size()&&fiu_dr(i)>=heap.size()) ~~~~~~~~~^~~~~~~~~~~~~ main.cpp:61:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_st(fiu_st(i))>=heap.size()&&fiu_st(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:61:69: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_st(fiu_st(i))>=heap.size()&&fiu_st(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:69:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (fiu_dr(i)<heap.size()&&fiu_st(i)<heap.size()) ~~~~~~~~~^~~~~~~~~~~~ main.cpp:69:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (fiu_dr(i)<heap.size()&&fiu_st(i)<heap.size()) ~~~~~~~~~^~~~~~~~~~~~ main.cpp:74:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_st(fiu_st(i))>=heap.size()&&fiu_st(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:74:69: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_st(fiu_st(i))>=heap.size()&&fiu_st(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:84:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(fiu_st(i))>=heap.size()&&fiu_dr(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:84:69: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(fiu_dr(fiu_st(i))>=heap.size()&&fiu_dr(fiu_dr(i))>=heap.size()) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:101:9: warning: unused variable 'i' [-Wunused-variable] int i=0; ^