Compilare: main.cpp: In function 'int main()': main.cpp:35:21: warning: iteration 2000 invokes undefined behavior [-Waggressive-loop-optimizations] 35 | if (fr[i]>mx) | ~~~~^ main.cpp:34:24: note: within this loop 34 | for (int i=1; i<=Nmax*2+1; i++) | ~^~~~~~~~~~ main.cpp:53:28: warning: 'yi' may be used uninitialized [-Wmaybe-uninitialized] 53 | fout<<xi<<' '<<yi<<' '<<xf<<' '<<yf; | ^~~ main.cpp:33:44: note: 'yi' was declared here 33 | int mx=0, val=-Nmax-1, xf, yf, xi, yi; | ^~ main.cpp:53:19: warning: 'xi' may be used uninitialized [-Wmaybe-uninitialized] 53 | fout<<xi<<' '<<yi<<' '<<xf<<' '<<yf; | ^~~ main.cpp:33:40: note: 'xi' was declared here 33 | int mx=0, val=-Nmax-1, xf, yf, xi, yi; | ^~ main.cpp:53:42: warning: 'yf' may be used uninitialized [-Wmaybe-uninitialized] 53 | fout<<xi<<' '<<yi<<' '<<xf<<' '<<yf; | ^~ main.cpp:33:36: note: 'yf' was declared here 33 | int mx=0, val=-Nmax-1, xf, yf, xi, yi; | ^~ main.cpp:53:37: warning: 'xf' may be used uninitialized [-Wmaybe-uninitialized] 53 | fout<<xi<<' '<<yi<<' '<<xf<<' '<<yf; | ^~~ main.cpp:33:32: note: 'xf' was declared here 33 | int mx=0, val=-Nmax-1, xf, yf, xi, yi; | ^~