Compilare: main.cpp: In function 'int main()': main.cpp:140:19: warning: 'yf' may be used uninitialized [-Wmaybe-uninitialized] 140 | if(dist[xf][yf]==-1 || dist[xs][ys]==-1) | ~~~~~~~~~~~^ main.cpp:114:18: note: 'yf' was declared here 114 | int xs,ys,xf,yf; | ^~ main.cpp:140:19: warning: 'xf' may be used uninitialized [-Wmaybe-uninitialized] 140 | if(dist[xf][yf]==-1 || dist[xs][ys]==-1) | ~~~~~~~~~~~^ main.cpp:114:15: note: 'xf' was declared here 114 | int xs,ys,xf,yf; | ^~ main.cpp:140:39: warning: 'ys' may be used uninitialized [-Wmaybe-uninitialized] 140 | if(dist[xf][yf]==-1 || dist[xs][ys]==-1) | ~~~~~~~~~~~^ main.cpp:114:12: note: 'ys' was declared here 114 | int xs,ys,xf,yf; | ^~ main.cpp:140:39: warning: 'xs' may be used uninitialized [-Wmaybe-uninitialized] 140 | if(dist[xf][yf]==-1 || dist[xs][ys]==-1) | ~~~~~~~~~~~^ main.cpp:114:9: note: 'xs' was declared here 114 | int xs,ys,xf,yf; | ^~