Compilare: main.cpp: In function 'int main()': main.cpp:81:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi < oi.size() && oi[currOi].first == i) ~~~~~~~^~~~~~~~~~~ main.cpp:86:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currDr < dr.size() && dr[currDr].first == 0) ~~~~~~~^~~~~~~~~~~ main.cpp:96:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi < oi.size() && oi[currOi].first == i) ~~~~~~~^~~~~~~~~~~ main.cpp:99:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currOi2 < oi.size() && oi[currOi2].first == i - h - 1) ~~~~~~~~^~~~~~~~~~~ main.cpp:102:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (currDr < dr.size() && dr[currDr].first == i - h) ~~~~~~~^~~~~~~~~~~ main.cpp:48:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d%d%d", &n, &m, &w, &h); ^ main.cpp:53:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &x, &y); ^ main.cpp:64:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &x, &y); ^