Compilare: main.cpp: In function 'int main()': main.cpp:11:66: warning: unused variable 'x' [-Wunused-variable] 11 | int n, s=0, t, smin=0, first, last, firstin, lastin, i1, i2, x, i, sinit=0; | ^ main.cpp:69:39: warning: 'last' may be used uninitialized [-Wmaybe-uninitialized] 69 | fout<<s<<" "<<first<<" "<<last-first+1; | ~~~~^~~~~~ main.cpp:11:35: note: 'last' was declared here 11 | int n, s=0, t, smin=0, first, last, firstin, lastin, i1, i2, x, i, sinit=0; | ^~~~ main.cpp:69:39: warning: 'first' may be used uninitialized [-Wmaybe-uninitialized] 69 | fout<<s<<" "<<first<<" "<<last-first+1; | ~~~~^~~~~~ main.cpp:11:28: note: 'first' was declared here 11 | int n, s=0, t, smin=0, first, last, firstin, lastin, i1, i2, x, i, sinit=0; | ^~~~~ main.cpp:73:42: warning: 'lastin' may be used uninitialized [-Wmaybe-uninitialized] 73 | fout<<smin<<" "<<lastin+1<<" "<<n-lastin+firstin-1; | ~^~~~~~~ main.cpp:11:50: note: 'lastin' was declared here 11 | int n, s=0, t, smin=0, first, last, firstin, lastin, i1, i2, x, i, sinit=0; | ^~~~~~ main.cpp:73:49: warning: 'firstin' may be used uninitialized [-Wmaybe-uninitialized] 73 | fout<<smin<<" "<<lastin+1<<" "<<n-lastin+firstin-1; | ~~~~~~~~^~~~~~~~ main.cpp:11:41: note: 'firstin' was declared here 11 | int n, s=0, t, smin=0, first, last, firstin, lastin, i1, i2, x, i, sinit=0; | ^~~~~~~