Compilare: main.cpp: In function 'int main()': main.cpp:21:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < pos[le][0].size() && (i - pos[le][0][j] - 1) * B <= dp[i][0]; j++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:24:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < pos[le][1].size() && (i - pos[le][1][j] - 1) * B <= dp[i][0]; j++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < pos[ri][0].size() && (i - pos[ri][0][j] - 1) * B <= dp[i][0]; j++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < pos[ri][1].size() && (i - pos[ri][1][j] - 1) * B <= dp[i][0]; j++) { ~~^~~~~~~~~~~~~~~~~~~