Compilare: main.cpp: In function 'void Read()': main.cpp:529:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&N,&P,&K); ^ main.cpp:532:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&T[i].d,&T[i].c); ^ main.cpp:534:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&X,&Y),Fr[X][Y]=1,Fr[Y][X]=1; ^ main.cpp: In function 'void UpdateMatrix()': main.cpp:543:37: warning: iteration 204 invokes undefined behavior [-Waggressive-loop-optimizations] for(c=1;c<=20000;++c)D[l][c]=oo; ^ main.cpp:543:18: note: within this loop for(c=1;c<=20000;++c)D[l][c]=oo; ~^~~~~~~ main.cpp: In function 'void BellmanFord()': main.cpp:575:39: warning: iteration 204 invokes undefined behavior [-Waggressive-loop-optimizations] for(i=1;i<20000;++i)Sol=Min(D[P][i],Sol); ~~~~~~^ main.cpp:507:19: note: in definition of macro 'Min' #define Min(a,b) (a<b ? a:b) ^ main.cpp:575:14: note: within this loop for(i=1;i<20000;++i)Sol=Min(D[P][i],Sol); ~^~~~~~