Compilare: main.cpp: In function 'int solve(int)': main.cpp:9:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i < obs[coloana].size() - 1;i++){ ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int near(int, int)': main.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(r + pas < ccc[coloana].size() && ccc[coloana][r + pas] <= linie) ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int up(int, int)': main.cpp:34:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(r + pas < ccc[coloana].size() && ccc[coloana][r + pas] < linie) ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(r + 1 < ccc[coloana].size()) ~~~~~~^~~~~~~~~~~~~~~~~~~~~