Compilare: main.cpp: In function 'int main()': main.cpp:203:43: warning: narrowing conversion of 'i' from 'int' to 'short int' [-Wnarrowing] 203 | freqVal[mat[i][j]].push_back({i, j}); | ^ main.cpp:203:46: warning: narrowing conversion of 'j' from 'int' to 'short int' [-Wnarrowing] 203 | freqVal[mat[i][j]].push_back({i, j}); | ^ main.cpp:186:9: warning: unused variable 'id' [-Wunused-variable] 186 | int id = 0; | ^~