Compilare: main.cpp: In function 'int main()': main.cpp:32:42: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] 32 | c[i][j] += v[i][k] * m[k][j]; | ~~~~~~^ main.cpp:30:34: note: within this loop 30 | for(int k=1;k<=2;k++) | ~^~~ main.cpp:39:29: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] 39 | v[i][j] = c[i][j]; | ~~~~~~~~^~~~~~~~~ main.cpp:38:30: note: within this loop 38 | for(int j=1;j<=2;j++) | ~^~~ main.cpp:39:29: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] 39 | v[i][j] = c[i][j]; | ~~~~~~~~^~~~~~~~~ main.cpp:37:26: note: within this loop 37 | for(int i=1;i<=2;i++) | ~^~~ main.cpp:14:11: warning: array subscript 2 is above array bounds of 'long long int [2]' [-Warray-bounds] 14 | v[1][2] = 1; | ~~~~~~^ main.cpp:32:42: warning: array subscript 2 is above array bounds of 'long long int [2]' [-Warray-bounds] 32 | c[i][j] += v[i][k] * m[k][j]; | ~~~~~~^ main.cpp:39:27: warning: array subscript 2 is above array bounds of 'long long int [2]' [-Warray-bounds] 39 | v[i][j] = c[i][j]; | ~~~~~~^ main.cpp:39:24: warning: array subscript 2 is above array bounds of 'long long int [2][2]' [-Warray-bounds] 39 | v[i][j] = c[i][j]; | ~~~^ main.cpp:9:11: note: while referencing 'v' 9 | long long v[2][2],m[3][3]; | ^ main.cpp:39:27: warning: array subscript 2 is above array bounds of 'long long int [2]' [-Warray-bounds] 39 | v[i][j] = c[i][j]; | ~~~~~~^